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Renal intravascular large B cell lymphoma: the first case report in Korea and a review of the literature
Moonsik Kim, Haerim Chung, Woo Ick Yang, Hyeon Joo Jeong
J Pathol Transl Med. 2020;54(5):426-431.   Published online August 13, 2020
DOI: https://doi.org/10.4132/jptm.2020.06.18
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  • 5 Web of Science
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AbstractAbstract PDFSupplementary Material
Herein, we describe the first case of renal intravascular large B cell lymphoma in Korea occurring in a 66-year-old female. She presented with mild fever and dyspnea. On physical and laboratory evaluations, hemophagocytic lymphohistiocytosis was suspected, but the bone marrow biopsy results were unremarkable. During the work-up, massive proteinuria developed, which led to a renal biopsy. The renal architecture was relatively well-preserved, but the glomeruli were hypercellular with the infiltration of atypical, large lymphoid cells with increased nucleus-cytoplasm ratio and clumped chromatin. Similar cells were also present in the peritubular capillaries. The tumor cells exhibited membranous staining for CD20 and CD79a. After the diagnosis of intravascular large B cell lymphoma, the patient received rituximab-based chemotherapy under close follow-up.

Citations

Citations to this article as recorded by  
  • Intravascular large B-cell lymphoma of the central nervous system with renal involvement: a case report and literature review
    Jun Li, Zhaojiao Li, Yifeng Shi, Jiajie Chen, Heng Zhao, Xueye Mao, Shan Li, Huiying Wang, Qiang Meng, Lingchun Liu
    Frontiers in Oncology.2025;[Epub]     CrossRef
  • EBV-Positive Intravascular Large B-Cell Lymphoma of the Small Intestine: A Case Report and Literature Review
    Chenglong Pan, Xiaoling Ma, Yanfei Yao, Chunyan Wang
    International Journal of Surgical Pathology.2024; 32(3): 586.     CrossRef
  • Intravascular large B‐cell lymphoma in renal cell carcinoma incidentally detected by robot‐assisted partial nephrectomy
    Michio Noda, Yutaka Enomoto, Yukari Shirasugi, Sumiyo Ando, Yukimasa Matsuzawa, Haruki Kume
    IJU Case Reports.2022; 5(3): 191.     CrossRef
  • Case Report: Intravascular Large B-Cell Lymphoma: A Clinicopathologic Study of Four Cases With Review of Additional 331 Cases in the Literature
    Yingying Han, Qingjiao Li, Dan Wang, Lushan Peng, Tao Huang, Chunlin Ou, Keda Yang, Junpu Wang
    Frontiers in Oncology.2022;[Epub]     CrossRef
  • Renal Involvement of CD20-Negative Intravascular Large B Cell Lymphoma with Neurological Manifestations
    Faten Aqeel, Serena M. Bagnasco, Duvuru Geetha, Yoshihide Fujigaki
    Case Reports in Nephrology.2022; 2022: 1.     CrossRef
Original Articles
Long Non-coding RNA HOTAIR Expression in Diffuse Large B-Cell Lymphoma: In Relation to Polycomb Repressive Complex Pathway Proteins and H3K27 Trimethylation
Eun Ji Oh, Soo Hee Kim, Woo Ick Yang, Young Hyeh Ko, Sun Och Yoon
J Pathol Transl Med. 2016;50(5):369-376.   Published online August 22, 2016
DOI: https://doi.org/10.4132/jptm.2016.06.06
  • 10,941 View
  • 174 Download
  • 27 Web of Science
  • 24 Crossref
AbstractAbstract PDF
Background
A long non-coding RNA hox transcript antisense intergenic RNA (HOTAIR) is involved in epigenetic regulation through chromatin remodeling by recruiting polycomb repressive complex 2 (PRC2) proteins (EZH2, SUZ12, and EED) that induce histone H3 trimethylation at lysine 27 (H3K27me3). Deregulation of c-MYC and interaction between c-MYC and EZH2 are well known in lymphomagenesis; however, little is known about the expression status of HOTAIR in diffuse large B-cell lymphomas (DLBCLs).
Methods
The expression status of PRC2 (EZH2, SUZ12, and EED), H3K27me3, c-MYC, and BCL2 was analyzed using immunohistochemistry (n = 231), and HOTAIR was investigated by a quantification real-time polymerase chain reaction method (n = 164) in DLBCLs.
Results
The present study confirmed the positive correlation among PRC2 proteins, H3K27me3, and c-MYC in DLBCLs. Expression level of HOTAIR was also positively correlated to EZH2 (p < .05, respectively). Between c-MYC and HOTAIR, and between c- MYC/BCL2 co-expression and HOTAIR, however, negative correlation was observed in DLBCLs (p < .05, respectively). High level of H3K27me3 was determined as an independent prognostic marker in poor overall survival (hazard ratio, 2.0; p = .023) of DLBCL patients. High expression of HOTAIR, however, was associated with favorable overall survival (p = .004) in the univariate analysis, but the impact was not significant in the multivariate analysis. The favorable outcome of DLBCL with HOTAIR high expression levels may be related to the negative correlation with c- MYC expression or c-MYC/BCL2 co-expression.
Conclusions
HOTAIR expression could be one of possible mechanisms for inducing H3K27me3 via EZH2-related PRC2 activation, and induced H3K27me3 may be strongly related to aggressive DLBCLs which show poor patient outcome.

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Upregulated Neuro-oncological Ventral Antigen 1 (NOVA1) Expression Is Specific to Mature and Immature T- and NK-Cell Lymphomas
Eun Kyung Kim, Sun Och Yoon, Soo Hee Kim, Woo Ick Yang, Yoon Ah Cho, Soo Jeong Kim
J Pathol Transl Med. 2016;50(2):104-112.   Published online February 29, 2016
DOI: https://doi.org/10.4132/jptm.2016.02.08
  • 11,138 View
  • 72 Download
  • 14 Web of Science
  • 13 Crossref
AbstractAbstract PDF
Background
Recent studies have revealed that the splicing factor neuro-oncological ventral antigen 1 (NOVA1) is enriched in fibroblasts and accumulated T cells of tertiary lymphoid structures. In the present study, we investigated NOVA1 expression in various subtypes of mature and immature T- and natural killer (NK)-cell lymphomas as well as in various B-cell lymphoma subtypes. Methods: NOVA1 immunoexpression was evaluated in hyperplastic palatine tonsils (n = 20), T- and NK-cell lymphomas (n = 177), diffuse large B-cell lymphomas (n = 151), and other types of B cell lymphomas (n = 31). Nuclear staining intensity and percentage of positive tumor cells were graded. NOVA1 mRNA expression was analyzed in various lymphoma cell lines. Results: Tumor cells of T- and NK-cell lymphomas showed higher expression levels of NOVA1 than did normal paracortical T cells, and 56.5% of T- and NK-cell lymphoma cases showed diffuse and strong expression. The NOVA1 expression level varied according to the subtype; it was higher in angioimmunoblastic T-cell lymphoma, anaplastic lymphoma kinase (ALK)-negative anaplastic large cell lymphoma (ALCL), and T lymphoblastic leukemia/lymphoma (T-LBL), but it was lower in ALK-positive ALCL. In almost all B-cell lymphomas, NOVA1 expression was very low or negative. NOVA1 mRNA was also expressed in Jurkat, a T-LBL cell line. Conclusions: The present findings suggest that NOVA1 upregulation may be involved in certain subtypes of T- and NK-cell lymphomas, but not in B-cell lymphomas. Upregulated NOVA1 expression seems to be a specific biological feature of activated T cells such as T- and NK-cell lymphomas.

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Brief Case Reports
IgG4-Related Sclerosing Mesenteritis
Seok Joo Lee, Cheol Keun Park, Woo Ick Yang, Sang Kyum Kim
J Pathol Transl Med. 2016;50(4):309-311.   Published online January 11, 2016
DOI: https://doi.org/10.4132/jptm.2015.12.03
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  • 165 Download
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Primary Cutaneous Adenoid Cystic Carcinoma Arising in Umbilicus
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J Pathol Transl Med. 2016;50(4):322-324.   Published online January 11, 2016
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Cheol Keun Park, Eun Kyung Kim, Ji-Ye Kim, Hayoung Woo, Mi Jang, Hyang Sook Jeong, Woo Ick Yang, Sang Kyum Kim
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Original Article
Characteristics of Cutaneous Lymphomas in Korea According to the New WHO-EORTC Classification: Report of a Nationwide Study
Jae Ho Han, Young-Hyeh Ko, Yun Kyung Kang, Wan-Seop Kim, Yoon Jung Kim, Insun Kim, Hyun-Jung Kim, Soo Kee Min, Chan-Kum Park, Chan-Sik Park, Bong-Kyung Shin, Woo Ick Yang, Young-Ha Oh, Jong Sil Lee, Juhie Lee, Tae Hui Lee, Hyekyung Lee, Ho Jung Lee, Yoon Kyung Jeon, Hee Jeong Cha, Yoo-Duk Choi, Chul Woo Kim
Korean J Pathol. 2014;48(2):126-132.   Published online April 28, 2014
DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.2.126
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AbstractAbstract PDF
Background

Previously, cutaneous lymphomas were classified according to either the European Organization for the Research and Treatment of Cancer (EORTC) or the World Health Organization (WHO) classification paradigms. The aim of this study was to determine the relative frequency of Korean cutaneous lymphoma according to the new WHO-EORTC classification system.

Methods

A total of 517 patients were recruited during a recent 5 year-period (2006-2010) from 21 institutes and classified according to the WHO-EORTC criteria.

Results

The patients included 298 males and 219 females, and the mean age at diagnosis was 49 years. The lesions preferentially affected the trunk area (40.2%). The most frequent subtypes in order of decreasing prevalence were mycosis fungoides (22.2%), peripheral T-cell lymphoma (17.2%), CD30+ T-cell lymphoproliferative disorder (13.7%), and extranodal natural killer/T (NK/T) cell lymphoma, nasal type (12.0%). Diffuse large B-cell lymphoma accounted for 11.2% of cases, half of which were secondary cutaneous involvement; other types of B-cell lymphoma accounted for less than 1% of cases.

Conclusions

In comparison with data from Western countries, this study revealed relatively lower rates of mycosis fungoides and B-cell lymphoma in Korean patients, as well as higher rates of subcutaneous panniculitis-like T-cell lymphoma and NK/T cell lymphoma.

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    Min-Seung Park, Hyun-Young Kim, Jae Joon Lee, Duck Cho, Chul Won Jung, Hee-Jin Kim, Sun-Hee Kim
    Annals of Laboratory Medicine.2023; 43(3): 310.     CrossRef
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    G. Dobos, M. Miladi, L. Michel, C. Ram-Wolff, M. Battistella, M. Bagot, A. de Masson
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    Rebeca Calado, Maria Relvas, Francisca Morgado, José Carlos Cardoso, Oscar Tellechea
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    Gabor Dobos, Anne Pohrt, Caroline Ram-Wolff, Céleste Lebbé, Jean-David Bouaziz, Maxime Battistella, Martine Bagot, Adèle de Masson
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  • Cutaneous lymphomas in Taiwan: A review of 118 cases from a medical center in southern Taiwan
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    Dermatologica Sinica.2018; 36(1): 16.     CrossRef
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    In Sook Lee, You Seon Song, Seung Hyun Lee, Young Jin Choi, Sung Moon Lee
    Clinical Imaging.2018; 49: 111.     CrossRef
  • Epidemiologic, clinical and demographic features of primary cutaneous lymphomas in Castilla‐La Mancha, Spain: are we different?
    C. Ramos‐Rodríguez, M. García‐Rojo, G. Romero‐Aguilera, M. García‐Arpa, L. González‐López, M.P. Sánchez‐Caminero, J. González‐García, M. Delgado‐Portela, M.P. Cortina‐De La Calle, M.F. Relea‐Calatayud, F. Martín‐Dávila, R. López‐Pérez, M. Ramos‐Rodríguez
    Journal of the European Academy of Dermatology and Venereology.2018;[Epub]     CrossRef
  • Nasal-type NK/T-cell lymphomas are more frequently T rather than NK lineage based on T-cell receptor gene, RNA, and protein studies: lineage does not predict clinical behavior
    Mineui Hong, Taehee Lee, So Young Kang, Suk-Jin Kim, Wonseog Kim, Young-Hyeh Ko
    Modern Pathology.2016; 29(5): 430.     CrossRef
  • Cutaneous lymphoma: Kids are not just little people
    Katalin Ferenczi, Hanspaul S. Makkar
    Clinics in Dermatology.2016; 34(6): 749.     CrossRef
Case Report
Rosai-Dorfman Disease in the Breast with Increased IgG4 Expressing Plasma Cells: A Case Report
Yoon Jin Cha, Woo Ick Yang, Se Ho Park, Ja Seung Koo
Korean J Pathol. 2012;46(5):489-493.   Published online October 25, 2012
DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.5.489
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AbstractAbstract PDF

Rosai-Dorfman disease (RDD) can present in any anatomic site, but breast involvement is rarely reported. Recently, a relationship between RDD and IgG4-related sclerosing disease has been suggested. Here we report another case of RDD with overlapping features of IgG4-related sclerosing disease occurring in a right breast of a 62-year-old female. On microscopic examination, the mass demonstrated a characteristic zonal pattern of proliferation of large polygonal histiocytes and lymphoplasma cells with stromal fibrosis. Emperipolesis was observed in histiocytes with abundant cytoplasm, which showed immunoreactivity for S-100 protein and CD68; the diagnosis of RDD was made. Sheets of plasma cells in the fibrotic stroma demonstrated positive reactions for IgG and IgG4. The mean count of IgG4-positive plasma cells was 100.2/high power field, and the ratio of IgG4/IgG was 56.7%. Additional findings of stromal fibrosis and obliteration of preexisting breast lobules suggested overlapping features with IgG4-related sclerosing disease.

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  • From Tumor Suspicion to Immune Revelation: A Breast Lump Signals IgG4-related Disease
    Renu Singh, Gurwinder Kaur, Md Ali Osama, Chitresh Kumar, Devender Bairwa
    Indian Journal of Gynecologic Oncology.2026;[Epub]     CrossRef
  • Rosai-Dorfman Disease of the Breast: Radiologic-Pathologic Correlation
    Kathryn W Zamora, Stefanie Zalasin, Ami Desai, Hua Guo
    Journal of Breast Imaging.2025; 7(5): 576.     CrossRef
  • Extranodal Rosai–Dorfman Disease With Increased IgG4-Positive Plasma Cells Involving the Breast: A Case Report With Review of the Literature
    Raymond Chimatira, Raisa Wessels
    The American Journal of Dermatopathology.2025;[Epub]     CrossRef
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    Jessman King Lun Lo, Sara Wai Wun Fung, Zara Chui San Tsang
    Surgical Practice.2024; 28(4): 229.     CrossRef
  • IgG4-related Breast Disease: Review of the Literature
    Helana Jeries, Yolanda Braun-Moscovici, Alexandra Balbir-Gurman
    Rambam Maimonides Medical Journal.2024; 15(4): e0018.     CrossRef
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    Polycarp Erivwo, Gulisa Turashvili
    Journal of Clinical Pathology.2021; 74(8): 475.     CrossRef
  • Rosai–Dorfman Disease: Breast Involvement—Case Report and Literature Review
    George Iancu, Nicolae Gica, Laura Mihaela Mustata, Anca Maria Panaitescu, Danut Vasile, Gheorghe Peltecu
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    Gi W. Shin, Young M. Park, Young J. Heo, Jin W. Baek, Yoo J. Lee, Ji Y. Han, Hayoung Park
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    Ding Dai, Qi Cai, Nasreen A. Vohra, Jan Wong, Zsuzsanna P. Therien, Karlene Hewan-Lowe, Ann Sutton
    Archives of Pathology and Clinical Research.2019; 3(1): 008.     CrossRef
  • Erdheim-Chester Disease Involving Lymph Nodes and Liver Clinically Mimicking Lymphoma: A Case Report
    Yeoun Eun Sung, Yoon Seo Lee, Jieun Lee, Kyo Young Lee
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  • Enfermedad de Rosai-Dorfman en mama de paciente masculino: una entidad rara
    Paola Iturralde Rosas-Priego, José Daniel Flores-Alatriste, Daniela Stuht López, Javier Gómez Pedroso-Rea, Cecilia Ortiz-de-Iturbide, Jorge Valenzuela-Tamariz, Manuel Ubiergo-García
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    Taisia Vitkovski, Galina S. Marder, Dominic A. Filardi, Ekta Gupta, Frank Breuer
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Original Articles
Cervical Cytologic Smears in Pap Solution vs ThinPrep: Smear Characteristics and Diagnostic Agreement.
Eunah Shin, Jin Kyu Park, No Won Park, Sang Bong Kim, Kyung Jong You, Jae Joon Lee, Woo Ick Yang
Korean J Pathol. 2011;45(6):621-625.
DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.6.621
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  • 1 Crossref
AbstractAbstract PDF
BACKGROUND
The Pap smear has brought about a dramatic improvement in the prevention of cervical cancer in women worldwide. In an effort to decrease the occasional false negatives in the Pap smear and further increase the screened population, ThinPrep Pap Test (TP), a fluid-based cytology collection method, has been developed. With preservation of claimed advantages of TP, we have developed a Pap test solution for manual preparatory process and compared our manually processed fluid-based Pap smear with TP to identify cytologic similarities and differences between the two methods.
METHODS
Cervical swipes of 204 patients were prospectively collected in the 'Pap solution' and also in PreservCyt solution for TP. Diagnoses and smear characteristics were compared.
RESULTS
The diagnoses of the paired smears agreed in 190 of the 204 cases (93.1%). The smear characteristics regarding overall cellularity and background cellularities were similar in the two methods and the stainability of the cells was virtually the same.
CONCLUSIONS
The 'Pap solution' has similar performance characteristics as TP in many aspects. With its advantages of cost-effectiveness and easier preparatory process, the 'Pap solution' can match previously implemented thin layer preparation.

Citations

Citations to this article as recorded by  
  • Cytological Evaluation and REBA HPV-ID HPV Testing of Newly Developed Liquid-Based Cytology, EASYPREP: Comparison with SurePath
    Youn Soo Lee, Gyungyub Gong, Jin Hee Sohn, Ki Sung Ryu, Jung Hun Lee, Shin Kwang Khang, Kyung-Ja Cho, Yong-Man Kim, Chang Suk Kang
    Korean Journal of Pathology.2013; 47(3): 265.     CrossRef
A Morphological Study of the Pulmonary Endothelium and Neuroendocrine Cells in Monocrotaline-Induced Pulmonary Arterial Hypertension.
Woo Ick Yang, Sang Ho Cho, In Joon Choi, Yoo Bock Lee
Korean J Pathol. 1992;26(6):582-592.
  • 1,856 View
  • 16 Download
AbstractAbstract PDF
To investigate the mechanism of monocrotaline-induced pulmonary arterial hypertension, authors performed immunohistochemical study using antibody to von Willebrand factor(vWF), cell kinetic study using 5-bromodeoxyuridine and ultrastructural study after single subcutaneous injection of monocrotaline(MCT) to Wistar rats. The results of this study demonstrated that the expression of vWF by pulmonary endothelial cells was markedly increased from day 3 until 2 months after MCT injection. The labeling index of pulmonary microvessel endothelium began to increase after six days and was maximal on the third weeks, and thereafter it remained slightly increased above basal level. Electron microscopic study revealed attachment of inflammatory cells an platelets to endothelium from 6 hours and degranulation of attached platelets 24 hours after MCT injection. Evidences of endothelial injury began to appear from 12 hours after MCT injection. Evidences of endothelial injury began to appear from 12 hours and was maximal after 48 hours. From the third day, ultrastructural change of cell regeneration and hypertrophy began to appear and was continuosly observed until 2 months. In addition, we evaluated the changes in the number of pulmonary neuroendocrine cells using antibody to gastrin releasing peptide but it demonstrated no change until 2 months suggesting no role of neuroendocrine cells in the development of pulmonary hypertension of Wistar rats at early stage. In conclusion, the results indicate that pulmonary hypertension by MCT injection is due to increased vascular resistance caused by vasoconstriction and hyperplasia of endothelium with musculariz ation of the pulmonary arterioles induced by endothelial dysfunction and some biologic substances released form endothelium and platelets.
Congenital Mesoblastic Nephromas with lmmunohistochemical and Flow Cytometric Analysis.
Woo Hee Jung, Yee Jeong Kim, Jee Young Han, Woo Ick Yang, Dae Young Kang
Korean J Pathol. 1995;29(3):303-310.
  • 1,898 View
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AbstractAbstract PDF
We reviewed 7 cases of congenital mesoblastic nephroma (4 cases of classical mesoblastic nephroma (CMN) and 3 cases of atypical mesoblastic nephroma (AMN)) using immuno-histochemical and flow cytometric study. Results are as follows. 1) The mean tumor size was 5 (3 to 7cm)cm in CMN and 9 (7 to 10cm)cm in AMN. The AMN revealed hemorrhage and necrosis in two Of three cases. A case of AMN showed cystic change without hemorrhage and necrosis. Mitotic count ranged in 0~4/10HPF in CMN and 20-35/10HPF in AMN. 2) Immunohistochemistry for vimentin was all positive. Actin, desmin were weakly positive in CMN, but negative in AMN. The findings were consistent with myofibroblastic differentiation in CMN and AMN was considered to be the less differentiated form of CMN. 3) Flow cytometiic analysis showed diploidy in two of two CMNs and two of three AMNs. Only one AMN showed aneuploidy with DNA index of 1.41. %SG2M were 8.1 and 15.9 (mean 12.0) in CMN and 16.9, 32.9 and 19.3 (mean 22.9) in AMN, respectively. We concluded that AMN should be distinguished from CMN, clinicopathologically.
Case Report
Multiple Glomus Tumors of the Ankle with Prominent Intranuclear Pseudoinclusions.
Jae Yeon Seok, Se Hoon Kim, Tae jung Kwon, Jieun Kwon, Yoon Hee Lee, Kyoo Ho Shin, Woo Ick Yang
Korean J Pathol. 2007;41(5):337-342.
  • 2,374 View
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AbstractAbstract PDF
Glomus tumors are neoplasms that are composed of modified smooth muscle cells of the glomus body. Here, we report a case of multiple glomus tumors of the ankle that showed various histologic types, including the solid type (glomus tumor proper) and angiomatous type (glomangioma). The tumor cells observed in this case also showed prominent intranuclear inclusions, which has not yet been reported in glomus tumors. Ultrastructural examination demonstrated that the nuclear inclusions were not true inclusion bodies but were intranuclear cytoplasmic pseudoinclusions formed by cytoplasmic invaginations that formed as a result of the deep and complex nuclear contours.
Original Article
Histopathologic Re-evaluation of Thymoma with Immunonhistochemical Study for bcl-2 and MIC-2 Protein.
Kyung Moo Yang, Mee Yon Cho, Soon Won Hong, Tae Seung Kim, Chan Il Park, Woo Ick Yang
Korean J Pathol. 1997;31(5):446-461.
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AbstractAbstract PDF
We reviewed 86 thymic epithelial tumors and reclassified them according to the Kirchner and Muller- Hermelink classification. They were subtyped as medullary, mixed, predominantly cortical (organoid), cortical, well differentiated thymic carcinoma, and poorly differentiated thymic carcinoma. The frequency of each subtype was determined and histologic findings were related to stage and myasthenia gravis. Immunohistochemical stains for bcl-2 protein as a marker for medullary thymocytes and MIC-2 protein as a marker for cortical thymocytes were performed in each case. The stages and association of myasthenia gravis was significantly different in each subtypes. The results of this study demonstrate that this histogenetic classification is clinically applicable. The bcl-2 protein was specifically demonstrated in lymphocytes within areas of medullary differentiation and MIC-2 protein in cortical differentiation. The expression of bcl-2 and MIC-2 proteins lend histogenetic support for this new classification of thymoma. Bcl-2 protein is strongly expressed in tumor epithelial cells of every case of poorly differentiated thymic carcinoma whereas the other types of thymic epithelial tumors do not show epithelial expression of this protein. The strong expression of bcl-2 protein in tumor epithelium may be considered as a predictor of aggressive behavior in thymic epithelial tumors.
Case Report
Solid Variant of Mammary Adenoid Cystic Carcinoma.
Ji Eun Kwon, Yoon Hee Lee, Ju Yeon Pyo, Sang Kyum Kim, Byeong Woo Park, Woo Ick Yang
Korean J Pathol. 2007;41(6):424-426.
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AbstractAbstract PDF
Adenoid cystic carcinoma (ACC) is a rare type of breast carcinoma and this tumor makes up less than 0.1% of all mammary carcinomas; ACC is known to show a relatively favorable prognosis. Among a variety of microscopic growth patterns of mammary ACC, a solid variant is the rarest and this can cause diagnostic difficulties. We present here a case of a solid variant of mammary ACC that occurred in the right breast of a 40-year-old woman who was initially diagnosed with invasive ductal carcinoma. We discuss the histological and clinical characteristics of this case.
Original Articles
Comparative Assessment of Immunohistochemical and Zieh1-Neelsen Stains for Demonstration of Mycobacterium Tuberculosis.
Mee Yon Cho, Soon Hee Jung, Woo Ick Yang
Korean J Pathol. 1993;27(3):243-248.
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AbstractAbstract PDF
To obtain a useful method for the identification of mycobacteria in tissue section, we evaluated 118 cases of tuberculosis: 48 pulm onary, 14 lymph nodal and 56 synovial tuberculosis. Seventy nine of these cases underwent the culture study. Sections stained with anti-Mycobacterium bovis were compared with the results of the Zieh1-Neelsen stain and culture. The immunohistochemical stain for Mycobacterium bovis in al examined cases was not any more sensitive than the Zieh1-Neelsen stain(p>0.05). Neverthless, the immunohistochemical stain was a useful method for the localization of mycobacteria because of the striking contrast between its background and the wider dimension of a positive area. Immunoreactive areas demonstrated a few intact mycobacteria showing a positive reaction in the Zieh1-Neelsen stain. In conclusion, double staining method using the immunohischemical stain for Mycobacterium bovis and the Zieh1-Neelsen stain is an efficient technique in oder to confirm the diagnosis of tuberculosis.
Expression of Anaphase Promoting Complex (APC) and APC Regulatory Proteins in Invasive Ductal Carcinoma Associated with Paget's Disease.
Kwang Hwa Park, Sang Yeop Yi, Woo Ick Yang, Yup Kang, Kwang Gil Lee
Korean J Pathol. 2004;38(5):319-323.
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AbstractAbstract PDF
BACKGROUND
Oncogene expression in Paget's disease of the breast is not well known. To characterize invasive ductal carcinoma associated with Paget's disease, we studied expression of anaphase promoting complex (APC) with its regulatory proteins.
METHODS
Immunohistochemical stainings were done with 10 cases of invasive ductal carcinoma associated with Paget's disease for APC, pituitary tumor transforming gene (PTTG), cyclin B1, p53, cyclin D1, and c-erbB-2. The expressions of these markers in Paget's disease were compared with those in the associated with carcinoma.
RESULTS
APC, PTTG, cyclin B1, and c-erbB-2 were positive in all of the cases with both Paget's disease and underlying carcinoma. p53 was expressed in Paget's disease of 6 cases (60%) and in carcinoma of 7 cases (70%). Cyclin D1 was positive in Paget's disease of 8 cases (80%) and in carcinoma of 9 cases (90%).
CONCLUSIONS
Breast carcinomas with Paget's disease seem to be distinguished by the high expression of APC, cyclin B1, PTTG, c-erbB2, and cyclin D1 in contrast to breast cancers without Paget's disease. Furthermore, the similar expression patterns of APC and APC regulatory proteins in both Paget's disease and underlying breast cancer support the epidermotropic theory as its pathogenetic mechanism.
Case Reports
Juvenile Granulosa Cell Tumor Arising in Undescended Testis: A case report.
So Ya Paik, Hae Youn Kang, Jae Ho Han, Woo Ick Yang, Seok Joo Han
Korean J Pathol. 1999;33(5):376-379.
  • 2,140 View
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AbstractAbstract PDF
Juvenile granulosa cell tumor is rare but one of the common congenital testicular neoplasms. Although histological features are typical of its ovarian counterpart, testicular juvenile granulosa cell tumor has a distinctly different clinical presentation. We report a case of juvenile granulosa cell tumor arising in the cryptochid testis of a 4-day-old newborn. A 6 5 5 cm sized multilocular cyst containing thick, mucinous fluid was found in the peritoneal cavity. The external surface of the cyst was smooth and the septae were relatively thin. The cyst consisted of numerous mucin-filled, cystic follicles lined by cells having vacuolated cytoplasm and round to oval dark nuclei without grooves. Cells resembling granulosa cells of an ovarian follicle were also observed in the intervening stroma forming irregular solid nests.
Adenoid Cystic Carcinoma of the Male Breast: A case report.
Mi Kyung Lee, In Chul Hong, Woo Ick Yang, Sang Ho Cho
Korean J Pathol. 1999;33(5):389-392.
  • 2,056 View
  • 21 Download
AbstractAbstract PDF
A 65 year-old male patient presented with a large palpable mass beneath the areola of the right breast for 7 years. The resected breast tissue was almost totally replaced by a round large solid mass (9 6 cm) with a pink-gray to yellow firm, partly nodular cut surface. Microscopically, the tumor revealed the diagnostic biphasic cellular pattern of adenoid cystic carcinoma, which consisted of both cribriform pattern of myoepithelial cells and tubular pattern of epithelial cells. On immunohistochemistry, the tumor revealed immunoreactivities for alpha-smooth muscle actin and S-100 protein in the myoepithelial cells and for AE1/AE3 in the epithelial cells. Mitoses were scarce. Multifocal lymphatic permeation and foci of perineural invasion were also found. Underlying resection margins and overlying skin were invaded by the tumor. We diagnosed this tumor as grade II adenoid cystic carcinoma according to the system utilized for the salivary gland tumors.
Original Article
Effect of Probucol and Verapamil on Injury to Myocardium and Nerve Fibers in Rat Heart Induced by Doxorubicin.
Sang Yeop Yi, Sang Ho Cho, Woo Ick Yang
Korean J Pathol. 2004;38(6):378-387.
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AbstractAbstract PDF
BACKGROUND
Doxorubicin is considered to be one of the most effective drugs to treat a variety of human cancers. However, the dose-dependent cardiotoxicity of doxorubicin limits its clinical usefulness. This study aimed to evaluate the effect of probucol and verapamil on the cardiac neurotoxicity and cardiomyopathy induced by the long-term use of doxorubicin.
METHODS
Sprague-Dawley male rats were grouped as the control group, the doxorubicin treated group, the doxorubicin treated with probucol group, and the doxorubicin treated with verapamil group. The rats were treated for 4, 6, 8 and 10 weeks. H&E staining and immunohistochemical staining for protein gene product 9.5, caspase-3, heat shock protein 70, and hsp 25 were performed.
RESULTS
The degree of interstitial inflammatory cell infiltration was mildest in the probucol treated group. The reduction in the number of nerve fibers in the probucol treated group was less than the other treatment groups. There was a negative correlation between the treatment duration and stained nerve fibers in all the treatment groups. The number of caspase-3 positive cells was more increased in the doxorubicin group and the verapamil treated group than in the control and probucol treated group.
CONCLUSION
It is suggested that probucol partly contributed to the inhibition of doxorubicin-induced cardiac neurotoxicity and cardiomyopathy, whereas the verapamil had no effect.
Case Reports
Primary Cardiac Angiosarcoma: A case report and rewiew of literture.
Mee Yon Cho, Soon Hee Jung, Woo Ick Yang, Kyung Hoon Choe, Chong Kook Lee
Korean J Pathol. 1993;27(4):397-401.
  • 1,951 View
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AbstractAbstract PDF
We report a case of primary cardiac angiosarcoma in a 35 year-old woman. She presented with dyspnea, facial edema and neck vein distension during 1 month. The oval round large mass(8x4 cm) filling the right atrium infiltrated into the entire thickness of the lateral wall and extended to the vena cava and ventricle. The interatrial septum and pericardium seemed to be intact. Despite the surgical excision and adjuvant chemo-and radiotherapy, the patient died 8 months later due to tumor recurrence. The histologic findings of tumor varied from benign looking capillary proliferation mimicking granulation tissue to sarcoma composed of spindle cells. But anastomosing vascular channels lined by anaplastic polygonal cells and intracytoplasmic lumen containing red blood cells were characteristic findings. These tumor cells showed positive reaction to endothelial cell antigen and factor VIII-related antigen. The intercellular junctional complex and vascular channels formed by cytoplasmic process of tumor cells were identified by the ultrastructural study.
Chronic Sclerosing Dacryoadenitis: Report of 2 Cases.
Ji Eun Kwon, Sang Kyum Kim, Sang Ryul Lee, Woo Ick Yang, Haeryoung Kim
Korean J Pathol. 2008;42(2):118-122.
  • 2,279 View
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AbstractAbstract PDF
Chronic sclerosing dacryoadenitis is a rare and under-recognized chronic inflammatory disease of the lacrimal gland. We describe 2 patients with a localized type of chronic sclerosing dacryoadenitis. Both patients presented with a slowly growing painless mass of the eyelid mimicking a tumorous lesion. The morphologic findings of the masses excised under the clinical diagnosis of lymphoma closely recapitulate those of chronic sclerosing sialadenitis (Kuttner tumor). Immunohistochemical staining demonstrated an increased population of IgG4-positive plasma cells confirming that this disease also belongs to the spectrum of a recently described IgG4-related sclerosing disease.
Original Articles
Fine needle aspiration cytology of proliferative fasciitis.
Yoon Jung Choi, Sang Yeop Yi, Woo Ick Yang, Soon Hee Jung, Kwang Gil Lee
J Pathol Transl Med. 1993;4(1):52-56.
  • 2,645 View
  • 14 Download
AbstractAbstract PDF
No abstract available.
The Expression of DNA Dependent Protein Kinase Protein in Malignant Lymphoma.
Tae Woong Noh, Nam Hoon Cho, Woo Ick Yang
Korean J Pathol. 2001;35(6):477-485.
  • 2,207 View
  • 10 Download
AbstractAbstract
BACKGROUND
DNA dependent protein kinase (DNA-PK) composed of Ku70, Ku80 and DNA-PK catalytic subunit (DNA-PKcs), plays an important role in the primary repair of break points of damaged DNA and is involved in the recombination of the V, D, and J genes. Loss of DNA-PK may lead to immunodeficiency and malignant lymphomas. This hypothesis has been supported by animal study in a Ku70 knock-out mouse model. The relationship between DNA-PK and human malignant lymphoma has not yet been studied.
METHODS
We examined the loss of DNA-PK proteins in 85 representative cases of different subtypes of malignant lymphoma. Immunohistochemical stains for DNA-PK subunits were performed on formalin-fixed and paraffin-embedded tissue sections.
RESULTS
Lymphomas demonstrated statistically significant loss of Ku70, Ku80 and DNA-PKcs. T cell lymphomas showed more loss of DNA-PK proteins in comparison with B cell lymphomas. According to the World Health Organization (WHO) classification system, both T cell lymphomas and high-grade subtypes of B cell lymphomas demonstrated similar degree of loss of DNA-PK proteins.
CONCLUSIONS
We confirmed the loss of DNA-PK proteins in malignant lymphomas through the results of our study, and the loss of these proteins seems to be more significant in high-grade lymphomas. These findings support the role of DNA-PK as a tumor suppressor gene.
Expression of TGF-beta and PDGF in Monocrotaline-Induced Pulmonary Hypertension in Rats.
Min Sun Cho, Sang Ho Cho, Woo Ick Yang, Woon Sup Han
Korean J Pathol. 1999;33(8):545-554.
  • 2,209 View
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AbstractAbstract PDF
Pulmonary vascular hypertension is characterized by migration and proliferation of smooth muscle cells accompanying abnormal synthesis and accumulation of extracellular proteins in vascular wall. The aim of this study is to define the role of endogneous TGF-betas and PDGF in the process of remodeling vessels through determining the temporal and spatial distribution of these growth factors in hypertensive pulmonary vessels in monocrotaline-induced pulmonary hypertension in rat. Sprague-Dawley rats were sacrificed 12 hours, 1, 2, 4, 7, 10, 14, 21, 28, and 56 days after treatment. The morphometric analysis of medial thickening and immunohistochemical study using antibodies to TGF-beta1, TGF-beta2, TGF-beta3, and PDGF were performed. Immunoreactivities for TGF-beta1 and TGF-beta3 were increased from the 14th day in the medial smooth muscle cells and PDGF showed increased expression from the 21st day in the medial smooth muscle cells. No difference in TGF-beta2 immunoreactivity was found between control and experimental groups. The expression of TGF-beta1, TGF-beta3 and PDGF increased in medial layers with the progressive thickening of pulmonary arteries which was considered to have close relation to medial hypertrophy of pulmonary arterioles. In the case of PDGF, however, the morphologic change occurred before increase in immunoreactivity was observed in the medial layer of pulmonary arterioles. Moreover, the function of isoforms of TGF-beta has yet to be completely elucidated; the different affinity to receptors and the degree of expression of these receptors that are supposed to affect the function of growth factors. Thus, further studies are needed.
Differentiation, Proliferative Index, and Caspase 3 Expression Rate in the Immunohistochemical Stains of Medulloblastoma as Prognostic Factors.
Sung Eun Kim, Woo Ick Yang, Tai Seung Kim
Korean J Pathol. 2001;35(6):536-543.
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AbstractAbstract
BACKGROUND
Medulloblastoma is a highly malignant neuroepithelial tumor of the childhood, less frequently, of adults, located in the posterior cranial fossa. It shows multiple lines of differentiation, expressing neuronal, glial, mesenchymal and ectodermal markers. The prognostic significance of cell differentiation has been studied, but received little agreement. In highly malignant tumors, very high proliferative index has been demonstrated. A major contributor to cell loss in medulloblastoma is reported to be apoptosis. In medulloblstoma, a linear relation between apoptotic index and proliferative index has not been convincingly demonstrated.
METHODS
We analyzed the immunohistochemical features, proliferative indices and apoptotic indices in medulloblastoma patients with regard to their clinical courses. Clinical features of 58 patients with medulloblastoma were reviewed. The presence of glial fibrillary acidic protein, synaptophysin, vimentin, and epithelial membrane antigen were examined with immunohistochemical method. The proliferative index (Ki-67) and caspase 3 expressing rate were calculated.
RESULTS
There was no significant correlation between the prognosis and the degree of cell differentiation. The positive correlation was noted between proliferative index and apoptotic index in a tumor mass.
CONCLUSIONS
Only proliferative index could be used as a prognostic factor.
A Pathological Review of Pleural Effusion by Immunocytochemical Methods.
Dong Hwan Shin, Hee Jeong Ahn, Woo Ick Yang, In Joon Choi
Korean J Pathol. 1990;24(4):476-481.
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AbstractAbstract PDF
An unequivocal diagnosis of mesothelioma during life, on the basis of limited biopsy tissue or cytological specimens, is frequently difficult and requires distinction from inflammatory mesothelial hyperplasia on the one hand and secondary neoplasms, especially adenocarcinoma on the other. Although some studies have produced conflicting results, it is generally believed that immunohistochemical methods can aid in this distinction. To obtain comparable and reproducible results, 23 metastatic carcinoma of the pleura and 2 unequivocal malignant epiehtlial mesotheliomas were studied by the peroxidase-antiperoxedase method on paraffin-embedded cell blocks, and commercially available antibodies to carcinoembryonic antigen (CEA), keratin and epithelial membrane antigen (EMA) were used. Nineteen metastaic adenocarcinoma (73%) and two mesotheliomas (100%) reacted with keratin and EMA antibodies. Nineteen matastatic adenocarcinomas (73%) reacted with EMA antibodies. Nineteen metastatic adenocarcinoma (73%) reacted with CEA antibody; no mesotheliomas stained for CEA. Two cases of reactive mesothlial hyperplasia showed positive for keratin, but negative reaction for EMA and CEA. Noen of the antibodies used in this study was specific for mesothelioma, but CEA was found to be the most useful marker for differentiating between mesothelioma and metastatic carcinoma.
The Effect of Ethanol on 3'-Methyl-4-dimethylaminoazobenzene Induced Carcinogenesis in Rat Liver.
Chan Il Park, Ho Guen Kim, So Young Jin, Woo Ick Yang, Yoo Bock Lee
Korean J Pathol. 1991;25(1):21-29.
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AbstractAbstract PDF
This study is aimed to elucidate the biological nature of the precancerous lesions and to evaluate whether the ethanol alters 3'-Methyl-4-dimethylaminoazobenzene (3'-Me-DAB) induced experimental hepatocarcinogenesis. A total of 108 Sprague-Dawley male rats were used for the experiment and divided into 6 groups according to 3'-Me-DAB and ethanol administration. Administration of the drugs were carried out daily by nasogastric tube insertion and the animals were sacrificed at different interval. A part of right lateral lobe was prepared for the histological examination. Cell kinetics of the immunohistochemical method for bromodeoxyuridine (BrdU). The administration of 3'-Me-DAB induced oval cell proliferation, hyperplastic nodule, cholangiofibrosis and carcinoma in the liver. The mean labelling indices, the percentages of BrdU labelled cells, of hepatocytes were increased by administration of 3'-Me-DAB, only to reverse after cessation of the drug (2.58 vs 0.61). The labelling indices of the oval cells were also affected by the administration and cessation of 3'-Me-DAB (11.41 vs 4.48). In contrast, the cholangiofibrosis did not decrease but were still increasing following cessation of 3'-Me-DAB administration (4.37 vs 5.17 and 8.25 vs 11.29). These finding that the hyperplastic nodule and particularly the cholangiofibrosis have an autonomous proliferative potential and are definite precancerous lesions in the experimental hepatocarcinogenesis. Short term administration of ethanol decreased the incidence of development of the precancerous lesions, but did not affect the labelling indices in all the pathologic lesions of hepatocarcinogenesis.
Case Reports
Fine Needle Aspiration Cytology of Kimura's Disease of Parotid Gland: Report of A Case Cytologically Failed to Diagnose as Kimura's Disease.
Se Hoon Kim, Haeryoung Kim, Sung Eun Kim, Woo Ick Yang, Soon Won Hong, Kwang Gil Lee
J Pathol Transl Med. 2003;14(2):86-90.
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AbstractAbstract PDF
Kimura's disease is a chronic inflammatory disorder of unknown cause and is most prevalent among Asians. The cytologic findings of Kimura's disease are significant numbers of eosinophils in a background of lymphoid cells, occasional fragments of collagenous tissue, proliferation of vessels, and Warthin-Finkeldey polykaryocytes. Among these features, the most important cytologic feature of Kimura's disease is a significant numbers of eosinophils. We experienced a case of Kimura's disease in the parotid gland which we failed to recognize on cytology due to the apparent paucity of eosinophils. On careful retrograde reviewing of the cytologic findings, a few scattered leukocytes, previously interpreted as polymorphous leukocytes, had bilobed nuclei and coarse green but granular cytoplasm on Papanicolaou preparation. These leukocytes showed obvious orange-red intracytoplasmic granules as in eosionophils on Giemsa stain. The paucity of eosinophils may be due to the thick fibrosis around lymphoid follicles or any technical error during aspiration. Whereas the Warthin-Finkeldey type giant cell is not a sensitive cytologic marker of Kimura's disease, it may be a helpful cytologic feature. To reach a correct cytologic diagnosis of Kimura's disease, it is important to keep in mind that searching for Warthin-Finkeldey type giant cells and evaluation of Giemsa stain for detection of eosinophils would be helpful.
Calcitonin Producing Middle Ear Carcinoid with Amyloid Deposition: A Case Report.
Beom Jin Lim, Woo Ick Yang, Soon Won Hong, Chanil Park
Korean J Pathol. 2002;36(2):115-118.
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AbstractAbstract PDF
Carcinoid tumor of the middle ear cavity is a rare neoplasm of low malignant potential. It grows slowly and rarely metastasizes. We recently experienced a case of carcinoid tumor of the middle ear cavity occurring in a 51-year-old female who was presented with hearing loss and tinnitus of the right ear. A 1 cm sized pinkish soft mass was noted in the promontory of the middle ear. Histologically, the mass was composed of nests and cords of tumor cells with slightly pleomorphic nuclei and eosinophilic cytoplasm. The extracellular matrix was glassy pink, homogeneous and exhibited apple green birefringence under a polarized light microscope after Congo red staining. The tumor cells showed immunoreactivity for cytokeratin, chromogranin A, synaptophysin, neuron-specific enolase and calcitonin. Electron microscopic examination confirmed the presence of neurosecretory granules. The production of calcitonin and amyloid by the tumor cells suggests the possible relationship of this tumor to the thyroid C cells.
Original Article
Neoplastic Diseases of the Hematopoietic and Lymphoid Tissues: New World Health Organization Classification.
Woo Ick Yang
Korean J Pathol. 2002;36(3):137-145.
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AbstractAbstract PDF
Encouraged by the success of the Revised European American Classification of Lymphoid Neoplasms (REAL) which was published in 1994 by th International Lymphoma Study Group (ILSG), the European Association of Pathologists and the Society for Hematopathology have started a collaborative classification project in 1995 under the auspices of World Health Organization (WHO). The two collaborators employed the same consensus building process used by ILSG for the REAL to the classification of myeloid, histocytic/dendritic, and mast cell neoplasms and listed real biologic entities defined by morphologic, immunophenotypic, cytogenetic, and and clinical findings. In contrast to the REAL, Clinical Advisory Committee composed of expert hematologists and oncologists evaluated the clinical relevance of the classification scheme proposed by the pathologists before the publication of new WHO classification of hematologic malignancies. While the classification of lymphoid neoplasms contained minor changes compared with the REAL, there were major changes in the classification system of myeloid neoplasms compared with the previously used French-American-British (FAB) classification. The new WHO classification of hematologic malignancies, published last year, is a product of the first true worldwide consensus among leading pathologists and clinicians alike, and it overcomes the drawbacksof old fashioned classification schemes; therefore, we can expect progress in the understanding and treatment of hematologic malignancies.
Case Report
Macrofollicular Variant of Papillary Thyroid Carcinoma with Extensive Hemorrhage.
Haeryoung Kim, SoonWon Hong, Kwang Gil Lee, Eun Kyung Kim, Cheong Soo Park, Woung Youn Chung, Woo Ick Yang
J Pathol Transl Med. 2004;15(1):60-64.
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AbstractAbstract PDF
BACKGROUND
The macrofollicular variant of papillary thyroid carcinoma (MVPC) is characterized by macrofollicles occupying more than half of the tumor and demonstrating nuclear features of classic papillary carcinoma. It is difficult to recognize on fine needle aspiration (FNA) cytology due to the paucity of aspirated neoplastic cell clusters, especially when the tumor is associated with extensive areas of hemorrhage.
CASE
A 34-year-old female presented with a well-demarcated nodule in the thyroid gland, diagnosed as a benign nodule on ultrasonography and computed tomography. FNA cytology smear revealed a few small aggregates of follicular cells with morphological features suspicious for papillary carcinoma, set in a background of hemorrhage, inflammatory cells, and hemosiderin-laden macrophages. Intraoperative frozen section revealed macrofollicular nests filled with hemorrhage and composed of follicular cells demonstrating nuclear clearing and grooves.
CONCLUSION
MVPC is a rare but distinctive variant of papillary carcinoma, which is easily mistaken for adenomatous goiter or benign macrofollicular neoplasm on radiologic findings. The cytopathologist should alert oneself on encountering benign radiologic findings and any smear composed of scant numbers of follicular cells with nuclear features suspicious for papillary carcinoma despite the bland-looking background of hemorrhage and hemosiderin-laden macrophages, and recommend intraoperative frozen sections for a definite diagnosis.
Original Articles
Relationship among the Expression of Cyclin D1, p21, and p53 Protein, and Prognosis in Non-Small Cell Lung Carcinomas.
Seok Woo Yang, Sang Ho Cho, Woo Ick Yang, Woo Hee Jung, Chul Min Ahn, Doo Yun Lee
Korean J Pathol. 1999;33(12):1120-1130.
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AbstractAbstract PDF
Recently, cell cycle regulators have been suggested as new prognostic factors of the lung cancer. In this study, we evaluated the expression of cyclin D1, p21, and p53 using the X2-test, with regard to the stage of the patients, histologic type, and histologic differentiation in the 135 cases of non-small cell lung carcinomas (NSCLC). To evaluate the confounding effects among cyclin D1, p21, and p53 on X2-test analysis, we used the Mantel-Haenzel test. The NSCLC in this study included 82 cases of squamous cell carcinoma and 53 cases of adenocarcinoma. Each nuclear staining of cyclin D1, p21, and p53 was observed in 65 cases (48.1%), in 54 cases (40.0%), and in 81 cases (60.0%) of NSCLCs, respectively. Only p53 expression was significantly associated with the stage (stage I, II, IIIa) (p<0.05) and squamous cell carcinoma (p<0.05). On the other hand, cyclin D1 expression was significantly associated with the histologic differentiation. The confounding effects among cyclin D1, p21, and p53 revealed that only p21 expression changed the relationship between p53 and stage. In this regard, further study is needed.
Distribution of S-100 Protein Positive Dendritic Cell and its Correlation with Degree of Malignancy in Gastric Carcinoma.
Tae Jung Jang, Woo Ick Yang, Chan Il Park, In Joon Choi
Korean J Pathol. 1991;25(4):327-337.
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AbstractAbstract PDF
The present study was performed in order to investigate the correlation among the number of T zone histiocytes, the clinicopathologic parameters and the patient's survival. The subjects in this study were 131 advanced gastric carcinomas including 86 follow-up cases and 41 early gastric carcinomas. The infiltration of T zone histiocytes into tumor tissues was investigated using the immunohistochemical method with andti s-100 protein, nd the data obtained were evaluated statistically. T zone histiocytes were scattered among the cancer cells and in areas formed clusters within the cancer stroma. These cells were abundantly present in tumor tissues and around lymphoid follicles but were rarely seen in surrounding normal stomach tissue. Analysis of the number of T zone histiocytes showed no correlation between the number of T zone histiocytes and the clinicopathologic features except the degree of lymphocytic infiltration within the advanced and the early gastric carcinomas. Survival of the patients with a marked infiltration of T zone histiocytes in stage III was longer than that with mild infiltration of T zone histiocytes, but there was no statistical significance(P value=0.084). Multivariate regressio analysis revealed that the depth of invasion(P value=0.0074) and the lymphocytic infiltration(P value=0.0152) were the important prognostic factors. The results indicate that good prognosis is expected in cases with less deep invasion and high lymphocytic infiltration, and that the number of T zone histiocytes is in proportio to the degree of lymphocyte infiltration within the tumor, although not directly correlated with the patient's survival.
Extracellular Matrix and Astrocytic Response during Regeneration following Cryogenic Injury in Adult Rat Cerebral Cortex.
Soo Im Choi, Woo Ick Yang, Tae Seung Kim
Korean J Pathol. 1996;30(6):473-486.
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AbstractAbstract PDF
Astrocytes are the most numerous cellular elements in the cerebrum, and they normally have a very slow turnover rate. But during regeneration after injury, they proliferate markedly resulting in astrogliosis. The extracellular matrix in the central nervous system is present in the vessel walls and in the external glia limitans as a basal lamina. The presence of an intact extracellular matrix framework is important in regeneration after injury. Understanding the properties of astrocytic proliferation will be helpful to find out new treatment for functional recovery in the central nervous system. In this study, after cryogenic injury was performed on the cerebral cortex in rats, changes in astrocytes and the extracellular matrix were observed using light microscopy, immunohistochemical stain for glial fibrillary acidic protein(GFAP), proliferating cell nuclear antigen(PCNA), fibronectin, laminin, and type IV collagen, autoradiography and electron microscopy. The results were as follows; 1) The coagulative necrosis, which followed cryogenic injury on the cerebral cortex was healed, forming a new pia mater above the lesion. 2) Some of the PCNA positive cells were astrocytes and some of the GFAP positive cells showed a positive reaction to PCNA. 3) Proliferating astrocytes labelled by autoradiography or immunohistochemical stain for PCNA reached maximal numbers 3days after the injury and they were no longer found 2 weeks after injury. 4) In autoradiography with immunohistochemical stain for GFAP, about 1% of GFAP positive astrocytes were labelled by autoradiography and in double immunohistochemical stain for PCNA and GFAP, about 8-16% of GFAP positive astrocytes were also stained by PCNA. 5) In immunohistochemical stain for fibronectin, laminin and type IV collagen, laminin and type IV collagen were present in the newly formed blood vessel walls and fibronectin showed a diffuse positive reaction within the lesion. The new pia mater was formed within 2 weeks after the injury. 6) On electron microscopic examination, basal lamina material was found in the vessel wall 1 week after the injury and at 2 weeks, a nearly complete and continuous basal lamina was formed although the thickness was uneven. According to these findings, astrocytes in the cerebral cortex of adult rats proliferate very early in the regenerative period after cryogenic injury. At 2 weeks after the injury, this regeneration ceases and the damaged basal lamina of pia mater and vessel wall were reconstituted.
Case Report
Non-cirrhotic Portal Hypertension in Idiopathic Myelofibrosis: A case report.
Sung Eun Kim, Young Nyun Park, Woo Ick Yang, Jin Sup Choi, Chanil Park
Korean J Pathol. 2000;34(5):386-388.
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AbstractAbstract PDF
We report a case of non-cirrhotic portal hypertension in a 73 year-old woman, who had 19-year history of idiopathic myelofibrosis. There were esophageal varix, splenomegaly, and ascites. The biopsied liver showed irregular sinusoidal/ perisinusoidal fibrosis and occasional central-to-central fibrous connection. In areas with extensive fibrosis, coarse collagen fibers filled the sinusoidal spaces and compressed hepatocytes. However, nodular regeneration was absent. Double immunohistochemical stain for smooth muscle actin and proliferation cell nuclear antigen (PCNA) revealed diffusely activated stellate cells, some of which showed nuclear PCNA staining. There was also extramedullary hematopoiesis with bizarre megakaryocytes. The portal vein and its branches were patent. Idiopathic myelofibrosis is a rare cause of non-cirrhotic portal hypertension: the portal hypertension was considered to be the result of sinusoidal/perisinusoidal fibrosis in this case.
Original Article
Prognostic Implications of Ki-67 Labelling Index and p53, bcl-2 Protein Expression in the Primary Central Nervous System Lymphoma.
Jae Ho Han, Woo Ick Yang, Tai Seung Kim
Korean J Pathol. 2000;34(6):456-464.
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AbstractAbstract PDF
It has been claimed that CNS lymphoma, a rare neoplasm accounting for only a small fraction of malignant brain tumors, occurs with increasing frequency in immunologically normal as well as immunocompromised individuals. We investigated the prognostic value of Ki-67 index, p53, and bcl-2 oncoprotein expression in relation to the clinicopathological parameters in the primary CNS lymphoma patients. The tumors were graded by Kiel classification and the Working formulation and included 33 high-grade, 4 intermediate-grade, and 5 low-grade lymphomas. The phenotype was determined in 38 cases: 30 were B cell type and 8 were T cell type. All cases displayed variable degrees of nuclear Ki-67 staining from 1.0% to 92.0% (mean 51.1%). A highly significant correlation was established between the proportion of Ki-67 positive cells and the classification into grades (p=0.0002) and phenotypes (p=0.0002). Overexpression of p53 and bcl-2 protein was found in 37.1% and 51.4% of 35 patients, respectively. And p53 expression was significantly increased in B cell type (p=0.02). On Kaplan-Meier survival curve, the phenotype, grade of tumors, and p53 and bcl-2 protein expression were not correlated with overall survival. On multivariate analyses, overall survival was independently influenced by Ki-67 index. In conclusion, it is suggested that Ki-67 proliferating index is the most important marker for predicting biologic behavior of the primary CNS lymphoma.
Case Reports
Mullerian Adenosarcoma of the Ovary with Sex Cord-Stromal Differentiation: A case report.
Sun Hee Sung, Soon Won Hong, Kyu Rae Kim, Woo Ick Yang
Korean J Pathol. 1992;26(2):164-170.
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AbstractAbstract PDF
Mullerian adenosarcoma is a tumor composed of a mixture of glandular and stromal elements in which the glandular component appear to be neoplastic but, histologically, benign with the stromal component showing varying degrees of malingancy. We report a case of ovarian m llerian adenosarcoma with sex cord stroma differentiation in the stromal components. A 57 year-old female who presented with palpable mass in the right lower abdomen had undergone through salingo-oophorectomy. Grossly, the ovary was multicystic, and partly showed a solid appearance with multiple polypoid projections into the dilated cystic spaces. On microscopic examination, the tumor consisted of benign to borderline epithelial glands that were lined by variety of mullerian epithelia and sarcomatous component with sex cord-stromal elements, which include sertoliform tubules, Leydig cell like clusters, and granulosa cells.
Infantile Solitary Eosinophilic Granuloma of the Lymph Node: A case report.
Sun Hee Sung, Woo Ick Yang, Jae Ok Kim
Korean J Pathol. 1992;26(3):277-282.
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AbstractAbstract PDF
Infantile form of histiocytosis X is commonly presented as multiorgan desseminated form such as Letterer-Siwe disease. Lymph node involvement of histiocytosis X is usually accompanied by adjacent bone or skin lesion. Solitary nodal eosinophilic granuloma without evidence of other organ involvement is very rare. A case herein report is a 11 month-old female infant presented with fever and palpable both inguinal lymph nodes. There was neither skin lesion nor hepatosplenomegaly. Laboratory evaluation was within normal range except increased alkaline phosphatase and many neutrophils in urine. Radiologic examination revealed no remarkable bone lesions. And she showed good clinical outcome without evidence of other organ involvements. On microscopic examination of inguinal lymph node it was replaced by infiltration of histiocytes mainly along the sinusoid. Some of histiocytes showed morphologic features of "histiocytosis X cell" having nuclear grooves or multilobulation. Multinulceated giant cells were frequently see. Numerous eosinphils were also infiltrated and showed multifocal microabscess formation. Immunohistochemical staining revealed that majority of histiocytes were postitive for S-100 protein but multinucleated histriocytes, phagocytic histiocytes and those around the abscess were positive for macrophage marker, suck as CD68 and alpha-1-antichymotrypsin. Interestingly some histiocytes showed positivity for both S-100 protein and macrophage marker. These results suggest that histiocytosis X is proliferative disorder of phenotypically heterogenous population of histiocytes in contrast to the theory that it is a proliferative disorder of Langerhans cells.
A Pancreatic Cyst of the Anterior Mediastinum.
Kye Weon Kwon, Kyung Young Jung, Woo Ick Yang
Korean J Pathol. 1998;32(11):1025-1027.
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AbstractAbstract
Although heterotopia of pancreatic tissue is a developmental anomaly found in approximately 2% of all autopsies, pancreatic tissue within the thorax and mediastinum is uncommon. In most of these instances, the pancreatic tissue is a component of gastroenteric duplication cysts, intralobar pulmonary sequestrations or teratomas. We describe an anterior mediastinal cyst consisting entirely of pancreatic tissue. A previously healthy 27-year-old woman was admitted due to chest pain during deep inspiration. The computed tomographic scan of the thorax showed a large cyst occupying the right anterior mediastinum. The excised multilocular cystic lesion measured 12 cm in maximum diameter and contained a brown, turbid fluid. The wall was fibrotic and showed a haphazard mixture of ducts and exocrine acini without islets. The histogenesis of this lesion is unclear.
Malignant Mixed Mullerian Tumor of Fallopian Tube with Multiple Distinct Heterologous Components.
Beom Jin Lim, Jae Wook Kim, Woo Ick Yang, Nam Hoon Cho
Korean J Pathol. 2003;37(6):429-431.
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AbstractAbstract PDF
We experienced a case of primary malignant mixed mullerian tumors (MMMT) of the fallopian tube of FIGO stage I. In addition to endometrioid adenocarcinomas, multiple apparent heterologous elements encompassing myxoid chondrosarcoma, osteosarcoma, myxoid liposarcoma and well differentiated angiosarcoma were recognized as separate nodules. These findings have not been described previously in MMMTs of the female genital tract.
Original Article
Histologic and Immunopathologic Study of Central Nervous System Lymphoma.
Yee Jeong Kim, Tae Seung Kim, Woo Ick Yang, Kyu Rae Kim
Korean J Pathol. 1992;26(5):476-483.
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AbstractAbstract PDF
Twelve cases of primary malignant lymphoma of the central nervous system experienced between 1980 and 1990 were investigated by histological and immunohistochemical findings correlated with clinical observation. Of the 12 patients, 6 were male and 6 were female. Their ages ranged from 31 to 58 years(mean, 45.8 years). All Tumors were supratentorial except 1 case which was found in the spinal cord. The fronto-parietal lobe was the most common site, which accounted for 66.7%. Histologically, all the tumors showed unfavorable histology. Diffuse large cell type was the most frequent(66.7%). Immunohistochemical studies using monoclonal antibodies revealed predominance of B-cell phenotype. Although most cases were treated with a combination of surgery and irradiation, the outcome was poor in all.
Case Report
Giant Cell Tumor of the Larynx: Report of a case.
Soya Paik, Yoon Mee Jeen, Woo Ick Yang, In Joon Choi, Young Ho Kim
Korean J Pathol. 1997;31(1):75-78.
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AbstractAbstract PDF
Giant cell tumor arising in the osteocartilaginous tissue of the larynx is extremely rare. The few reported cases have all occurred in men older than 20 years and the site of origin has been exclusively localized to the thyroid and cricoid cartilages that are known to undergo enchondral ossification. The formation of giant cell tumor in larynx is thought to be related to this enchondral ossification process. We report a case of giant cell tumor arising in the thyroid cartilage of a 39 year old man. CT scan of the neck revealed a well defined mass of soft tissue density replacing the right thyroid cartilage. Grossly the tumor was well demarcated with a distinctive pushing margin except for the area bordering the submucosa of the larynx where it showed focally an infiltrative pattern of growth. Microscopically multinucleated giant cells were found dispersed regularly among the spindle cells. Although mitoses were frequently noted in the spindle cells there was no atypicality or pleomorphism. Total laryngectomy was performed without further treatment. Postoperative follow up for 6 months has proved the patient to be alive and well without recurrence.

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