Journal of Pathology and Translational Medicine

Ji Eun Kim

13 Articles

Expression of P-glycoprotein and Apoptosis in Diffuse Large B-cell Lymphoma.: Ji Eun Kim, Young A Kim, Mee Soo Chang, Yunkyeong Jeon, JinHo Paik, Seon Og Yoon; Korean J Pathol. 2009;43(4):317-320.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.4.317

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Abstract PDF: BACKGROUND
Diffuse large B-cell lymphoma (DLBCL) is the most common type of malignant lymphoma which responds well to conventional chemotherapy. However, quite a few patients have a recurrence with more aggressive forms after completion of therapy. Multidrug resistance proteins (MRP) are related to this process in several ways such as cell cycle alteration and modulation of apoptosis. METHODS: We investigated the expression of P-glycoprotein (Gp), one of the well-known MRP, as well as apoptosis associated proteins in DLBCL. Immunohistochemical staining for Gp, p53, Bcl-2, Ki-67, active caspase 3 and FADD was done in forty DLBCL cases. The association between MRP and apoptosis associated proteins to clinical findings was also tested. RESULTS: Twenty-nine patients out of 40 (73%) with DLBCL were positive for Gp, and 26 cases (65%) had a strong positive for Gp. Gp expression was stronger in high-grade lesions than in low-grade lesions and was associated to Bcl-2 expression. However, we could not find an adverse impact of Gp expression on patients' overall survival or relapse free survival rate. CONCLUSIONS: Our study revealed a high frequency of expression for Gp in DLBCL with a possible relationship between the expressions of Gp to apoptosis associated proteins.

Detection of SV40 Large T Antigen in Malignant Lymphomas.: Young A Kim, MeeSoo Chang, Jinho Paik, Sun Och Yoon, Yoon Kyung Jeon, Chul Woo Kim, Ji Eun Kim; Korean J Pathol. 2009;43(4):312-316.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.4.312

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BACKGROUND
The association of simian virus 40 (SV40) with certain types of human cancers, including malignant lymphomas, has been a topic of interest for some time. Although the virus is distributed worldwide, its incidences vary according to the specific types of tumors, and the epidemiological areas. The aim of this study was to investigate the frequency of SV40 in malignant lymphomas among Korean patients. METHODS: One hundred seventy three cases of malignant lymphomas were evaluated by immunohistochemical staining for SV40 large T antigen (TAg), using an extremely sensitive, tyramide based, catalyzed signal amplification method. RESULTS: From 158 non-Hodgkin's lymphomas, including 115 diffuse large B-cell lymphomas, and 15 Hodgkin's lymphomas, none of the cases were positive for SV40 TAg. CONCLUSIONS: SV40 does not appear to be related to the pathogenesis of malignant lymphomas among Koreans.

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No Detection of Simian Virus 40 in Malignant Mesothelioma in Korea
Minseob Eom, Jamshid Abdul-Ghafar, Sun-Mi Park, Joung Ho Han, Soon Won Hong, Kun Young Kwon, Eun Suk Ko, Lucia Kim, Wan Seop Kim, Seung Yeon Ha, Kyo Young Lee, Chang Hun Lee, Hye Kyoung Yoon, Yoo Duk Choi, Myoung Ja Chung, Soon-Hee Jung
Korean Journal of Pathology.2013; 47(2): 124. CrossRef

Diffuse Large B Cell Lymphoma Shows Distinct Methylation Profiles of the Tumor Suppressor Genes among the Non-Hodgkin's Lymphomas.: Sun Och Yoon, Young A Kim, Yoon Kyung Jeon, Ji Eun Kim, Gyeong Hoon Kang, Chul Woo Kim; Korean J Pathol. 2008;42(1):16-20.

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Abstract PDF: BACKGROUND
Aberrant methylation of CpG islands in promoter regions is one of the major mechanisms for silencing of tumor suppressor genes in various types of human cancers including non-Hodgkin's lymphomas (NHL). In this study, we investigated the aberrant promoter methylation status of known or suspected tumor suppressor genes in NHLs and compared the methylation profiles between B-cell and T/NK-cell NHLs.
METHODS
54 cases of B-cell NHLs and 16 cases of T/NK-cell NHLs were examined for the methylation status of eight genes using methylation specific PCR.
RESULTS
CpG islands methylation was variously found in eight genes as follows; DAPK (71%), MT1G (70%), p16 (53%), CDH1 (53%), THBS1 (56%), MGMT (27.1%), COX2 (13%), and RUNX3 (11.4%). In six cases (8 %), methylation was not observed in any of these genes. Overall methylation index of B-cell NHLs (0.48) was significantly higher than that of T/NK-cell NHLs (0.32). Of eight genes tested, THBS1 and CDH1 methylations were much more prominent in diffuse large B-cell lymphomas than in T/NK-cell NHLs or other B-cell NHLs.
CONCLUSION
This study suggests that aberrant CpG island methylation is a frequent event in NHLs, and diffuse large B-cell lymphomas show overlapping but distinct methylation profiles.

Expressions of Id-1 and Id-2 in Hyperplastic Thyroid Tissue and Thyroid Carcinoma.: Young A Kim, Young Joo Park, Do Joon Park, Seong Hoe Park, Ji Eun Kim; Korean J Pathol. 2006;40(1):60-65.

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Abstract PDF: BACKGROUND
Id proteins are a family of helix-loop-helix proteins and are regarded to be negative regulators of cell differentiation. In general, Id-1 and Id-2 expressions are upregulated during tumor development and progression in a variety of neoplasms, and these expressions may be associated with aggressive tumor behavior. However, little is known about the roles of Id-1 and Id-2 in thyroid neoplasms.
METHODS
The expressions of Id-1 and Id-2 were assessed immunohistochemically in 310 normal, hyperplastic, and neoplastic thyroid tissues using tissue microarrays.
RESULTS
Normal thyroid tissues rarely expressed Id-1 or Id-2. Moreover, whilst Id-1 expression was more elevated in malignant thyroid tissue than in hyperplastic thyroid tissue, Id-2 expression was more variable. No significant differences were observed between histologic subtypes of thyroid carcinomas with respect to Id-1 or Id-2 expression. Follicular adenomas showed higher expressions of Id-1 and Id-2 than thyroid carcinomas. No significant association was found between clinicopathological parameters and Id-1 expression, though Id-2 expression was significantly reduced in metastatic, stage IV tumors.
CONCLUSION
The expressions of Id-1 and Id-2 were elevated in hyperplastic and neoplastic thyroid tissues. However, neither appears suitable as a marker of malignancy or an aggressive phenotype, although Id-2 expression in advanced thyroid carcinomas may reflect a favorable prognosis.

Histiocytic Sarcoma of the Spleen: A Case Report and Review of the Literature.: Jin Ho Paik, Yoon Kyung Jeon, Sung Shin Park, Hye Sook Min, Young A Kim, Ji Eun Kim, Chul Woo Kim; Korean J Pathol. 2005;39(5):356-359.

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Abstract PDF: True histiocytic sarcoma is an extremely rare tumor. Its clinicopathological features are not clearly understood. Here, we report the first Korean case of primary splenic histiocytic sarcoma. A 64-year-old female having refractory thrombocytopenia, anemia and splenic mass was admitted to the hospital, and received splenectomy. Grossly, spleen was enlarged up to 18 x 13 x 8 cm and occupied with multinodular masses. Microscopically, the masses were composed of atyical large cells with abudant cytoplasm and vesicular nuclei with prominent hemophagocytosis. The tumor cells were CD68 (+), S-100 protein (-), CD21 (-), CD1a (-). After splenectomy, thrombocytopenia and anemia were corrected. However two months later the symptoms recurred, and the patient died 15 months after splenectomy. This case shared the common clinicopathologic features with the several previously reported cases in other countries, represented by splenic mass formation and prominent hemophagocytosis associated with thrombocytopenia and anemia, often leading to poor outcome.

Methylation Status of Epstein-Barr Virus Major Latent Promoter C in NK/T-cell Lymphoma and Peripheral T-cell Lymphoma.: Ji Eun Kim, Young A Kim, Sung Shin Park, Yoon Kyoun Jeon, Seung Sook Lee, Chul Woo Kim; Korean J Pathol. 2003;37(3):174-179.

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Abstract PDF: BACKGROUND
Both the Natural killer/T-cell lymphoma (NKTL) and the peripheral T-cell lymphoma (PTCL) are relatively prevalent in the Asian population, and they are strongly associated with the Epstein-Barr virus (EBV). These two diseases have several common pathologic features, but show somewhat different clinical presentations. The critical point in terms of differentiating of these disease groups might be the impact of EBV in pathogenesis, and the variable gene expression of EBV regulated by a major latent C promoter (Cp).
METHODS
We investigated 43 cases of NKTL and 30 cases of PTCL to evaluate EBV associated characteristics. EBV in situ hybridization was performed in all of the submitted cases. In the EBV positive cases, the methylation status of Cp which drives the expression of immunodominant viral nuclear protein, was examined by sensitive methylation specific PCR using paraffin embedded tissue.
RESULTS
EBV was found in 70% (30/43) of NKTL and 43% (13/30) of PTCL. Nasal and gastrointestinal lymphomas were predominantly NKTL. All of the successfully amplified cases of EBV positive NKTL and PTCL were of methylated Cp status.
CONCLUSIONS
The detection rate of EBV is high in NKTL, especially in the nasal area. The constantly methylated EBV Cp reflects the major role of Cp in regulating the EBV latency pattern and in helping EBV to avoid host immune system in both NKTL and PTCL.

Expression Pattern of DNA Mismatch Repair Genes in Tumors of Microsatellite Mutator Phenotype.: Jung Jin Kim, Myung Jin Baek, Nam Gyun Kim, Yun Hee Kim, Ji Eun Kim, Hoguen Kim, Chanil Park; Korean J Pathol. 2000;34(9):609-614.

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Abstract PDF: Microsatellite mutator phenotype (MMP) tumors were reported in a subset of gastrointestinal carcinomas. The molecular pathogenesis of MMP tumors shows defects in the DNA mismatch repair genes, and also many germline and somatic mutations were reported in the MMP tumors. However, the detection of genetic defects in the MMP tumors is very difficult, mainly because many genes are included in the DNA mismatch repair genes. This study was undertaken to determine the best strategy for detecting defects in the DNA mismatch repair genes in gastrointestinal carcinomas. One of the effective ways for detecting defects in DNA mismatch repair genes is to screen the MMP tumors and evaluate the products of DNA mismatch repair genes by performing the multiplex RT-PCR method. We have screened the MMP tumors by using 5 microsatellite markers in the 12 cancer cell lines, 120 colon carcinomas and 99 gastric carcinomas and found 6 MMP cell lines, 10 MMP colon cancers, and 9 MMP gastric carcinomas. In addition, we evaluated 6 DNA mismatch repair gene products (hMSH2, hMSH3, hMSH6, hMLH1, hPMS1 and hPMS2) by multiplex RT-PCR analysis and found decreased expression of the DNA mismatch repair genes in 5 (hMSH6 in DLD-1 and HCT-15; hMSH2 in LoVo; hMLH1 and hMSH3 in HCT-116; hMLH1 in SNU-638) out of 6 MMP cell lines. We also found a decreased expression of hMLH1 in 3 out of 10 MMP colon carcinomas, and in 6 out of 9 MMP gastric carcinomas. Our results indicate that the expression analysis of the DNA mismatch repair genes by multiplex RT-PCR method can reduce the number of genes subjected to mutational analysis and is convenient for screening the responsible DNA mismatch repair genes.

Fine Needle Aspiration Cytology of Osteoclast-like Giant Cell Tumor of the Liver: A Case Report .: Chan Sik Park, Ji Eun Kim, Mee Soo Chang; Korean J Cytopathol. 1999;10(1):79-84.

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Abstract PDF: Osteoclast-like giant cell tumor of the liver is an extremely rare malignancy with poor prognosis. To our knowledge, 5 cases have been reported in English literatures, but there was no report about fine needle aspiration cytologic(FNAC) features. We experienced a case of osteoclast-like giant cell tumor of the liver obtained by computed tomography(CT)-guided FNAC and needle biopsy. The cytologic findings mimicked giant cell tumor of the bone. A large hepatic mass of the left lobe with abdominal wall invasion was found by CT in a 46-year-old female complaining of epigastric pain. The FNAC showed moderately cellular smears consisting of osteoclast-like giant cells and mononuclear cells, which were individually scattered or intermingled in clusters. The osteoclast-like giant cells had abundant cytoplasms and multiple small round nuclei with fine chromatin and distinct nucleoli. The mononuclear cells had moderate amount of cytoplasm and relatively bland-looking oval nuclei with single small nucleoli. All of the cytologic features recapitulated the histologic findings of bland-looking osteoclast-like multinucleated giant cells evenly dispersed throughout the background of mononuclear cell. The immunohistochemical study showed positive reaction for CD68 and vimentin, but negative for cytokeratin in both osteoclast-like giant cells and mononuclear cells.

The Value of Immunohistochemistry on Paraffin Embedded Tissue Sections in the Differentiation of Subgroups of Low Grade B-Cell Lymphomas.: Tae Sook Hwang, Seung Sook Lee, Ji Eun Kim, Hye Seung Han, Chul Woo Kim; Korean J Pathol. 1998;32(12):1066-1073.

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Abstract: There had been a continuous evolution of lymphoma classification and recently a Revised European-American Lymphoma Classification was proposed by the International Lymphoma Study Group. This new classification often requires information on immunophenotypic and molecular biologic markers in addition to the usual histologic findings. Recent advances in the production of commercially available monoclonal antibodies reactive on formalin-fixed paraffin-embedded tissues provide us a great help to classify the non-Hodgkin's lymphoma. We have analyzed 31 low grade B-cell lymphomas by the schemes proposed by the International Lymphoma Study Group using antibodies to CD3, CD5, CD20, CD23, CD43, cyclin D1, and bcl-2 protein, and have analyzed the immunophenotypic features. Among 31 low grade B-cell lymphomas, 8 small lymphocytic lymphomas, 5 mantle cell lymphomas, 7 follicle center lymphomas (2 grade I, 3 grade II, and 2 grade III), and 11 marginal zone B-cell lymphomas (all of which were extranodal) were identified. Among 8 small lymphocytic lymphomas, 5 cases were positive for CD5; 6 cases were positive for CD23; 7 cases were positive for CD43; all 8 cases were negative for cyclin D1; and 7 cases were positive for bcl-2. Among 5 mantle cell lymphomas, 4 cases were positive for CD5 and CD43; all five cases were negative for CD23; 4 cases were positive for cyclin D1 and bcl-2. All 7 follicle center lymphomas were negative for CD5, CD43 and cyclin D1 and 2 cases were positive for CD23; and 6 cases were positive for bcl-2. All marginal zone B-cell lymphomas were negative for CD5, CD23 and cyclin D1; 3 cases were positive for CD43 and 9 cases were positive for bcl-2. Diagnostic utility for CD5 antigen detection on paraffin embedded tissue has a limitation due to weak antigen expression in tumor cells of B-cell lymphomas; however, still be useful in differentiating small lymphocytic lymphoma and mantle cell lymphoma from other B-cell lymphomas when applied in conjunction with CD43. CD23, CD43, and cyclin D1 appear to be of great help in differentiating subgroups of low grade B-cell lymphomas. Bcl-2, as known, is found to be useful to rule out reactive follicular hyperplasia.

Intraductal Papillary-Mucinous Neoplasm of the Pancreas: A case report.: Ji Eun Kim, Young Hyeh Ko, Howe Jung Ree, Yong Il Kim, Poong Ryul Lee; Korean J Pathol. 1996;30(8):726-732.

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Abstract PDF: Intraductal papillary mucinous neoplasm (IPMN) is a recently recognized clinicopathologic entity characterized by dilatation of pancreatic duct filled with copious mucin and papillary ductal epithelial proliferation ranging from simple hyperplasia to invasive carcinoma. The exact clinicopathologic identification of this tumor is important because of favorable prognosis contrast to that of conventional ductal adenocarcinoma. Herein we report a case of surgically resected typical IPMN. A 59-year-old man had a long history of diabetes mellitus with epigastric pain of 4 months duration. Ultrasonography and computed tomographic examination revealed cystic dilatations of main pancreatic duct in the head. The patient underwent total pancreatectomy. The gross appearance showed diffuse dilatation of main pancreatic duct associated with cystic dilatation of subbranches in the uncinate process. Histologic examination revealed diffuse papillary proliferations lined by mucinous epithelium with mild atypism within ectatic ducts. No invasive carcinoma was noted. Histochemically, the papillary epithelium contained mostly neutral and acid sialomucin.

Well-Differentiated Papillary Mesothelioma of the Peritoneum: Report of a case.: Ji Eun Kim, So Duk Lim, Kyu Rae Kim, Han Young Choi; Korean J Pathol. 1996;30(7):646-648.

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Abstract PDF: We described a case of well differentiated papillary mesothelioma (WDPM) of the peritoneum in a 68-year-old man because of its rarity. It was incidentally found during operation for renal cell carcinoma. Grossly, the tumor appeared as multiple small granules or nodules on the entire peritoneal surface, including serosa of the intestine, omentum and mesentery. Microscopically, characteristic features are papillary, tubulopapillary or solid architecture lined by single layer of uniform, cytologically bland, cuboidal or polygonal mesothelial cells. The tumor cells were positive for EMA, cytokeratin and vimentin, but negative for CEA on immunohistochemical staining. Ultrastructural study showed characteristic long slender microvilli on the surface and intercellular junctions.

Myofibroblastoma of the Male Breast: Report of a case.: Ji Eun Kim, Yeon Lim Suh, Howe Jung Ree; Korean J Pathol. 1996;30(7):623-629.

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Abstract: A case of myofibroblastoma of the breast in a 55-year-old man is described. Myofibroblastoma is a relatively recently recognized benign stromal tumor, and predominantly occurs in middle aged men. The pateint presented with a nontender firm mass in his right breast. Fine needle aspiration biopsy revealed bland looking stromal cell clusters without epithelial cells. Simple excision was done and the patient discharged uneventfully. The mass was well demarcated, lobulated and sligtly myxoid. Microscopically bipolar elongated spindle cell fascicles with interspersing broad collagen bands are so characteristic. Ultrastructurally the tumor cell show features of fibroblast as well as smooth muscle cell.

Chromomycosis of the Nasolacrimal Duct: Report of a case.: So Dug Lim, Ji Eun Kim, Kyu Rae Kim; Korean J Pathol. 1996;30(4):358-360.

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Abstract PDF: Chromomycosis is a chronic cutaneous fungal infection characterized by the presence of dark brown parasitic forms of fungi in biopsied tissues. It is usually resulted from the entry of the causative organism through a minor trauma, and therefore, most lesions are found on the exposed part of the body, such as limbs or face, and occurrence on the nasolacrimal duct is extremely rare. We report a case of chromomycosis of the right nasolacrimal duct, which was presented with clinical symptoms of nasolacrimal duct obstruction. The patient was a 40 year-old male who had had minor injuries on his left eye twice by paper and branches of the tree two months prior to epiphora in right eye. On dacryocystorhinostomy, right nasolacrimal duct was obstructed by pinkish brown mucoid ball. Microscopically, the mucoid ball revealed eosinophilic, amorphous, necrotic materials admixed with brown pigmented fungi. The organism showed characteristic dark brown, round, thick-walled, often septated, sclerotic bodies and brown pigmented long bead-like hyphae. The adjacent mucosa shows marked chronic nonspecific inflammation with fibrosis.

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