Journal of Pathology and Translational Medicine

Original Articles

Cytological Features That Differentiate Follicular Neoplasm from Mimicking Lesions: Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jung-Soon Kim, Jae Kyung Myung, Jae Soo Koh, Sunhoo Park, Myung-Soon Shin, Woo-Tack Song, Hye Sil Seol, Seung-Sook Lee; J Pathol Transl Med. 2018;52(2):110-120. Published online January 29, 2018; DOI: https://doi.org/10.4132/jptm.2018.01.17

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Background
It is difficult to correctly diagnose follicular neoplasms (FNs) on fine-needle aspiration cytology (FNAC) because it shares many cytological features with other mimicking lesions. The aim of this study was to identify the cytological features that differentiate FNs from mimicking lesions.
Methods
We included the cytological slides from 116 cases of thyroid FN diagnosed on FNAC, and included their subsequent histological diagnoses. We evaluated the cytological architectural pattern and nuclear features of the lesions according to their histological groups.
Results
The final histological diagnoses of the 116 cases varied, and included 51 FNs (44%), 47 papillary thyroid carcinomas (40%) including follicular variant, and seventeen cellular nodular hyperplasias (15%). Regardless of the final histological diagnosis, microfollicular pattern was observed in most cases. On the other hand, trabecular pattern was identified in 34% of FNs, but not in any other lesions. Additionally, elongated nuclei and ground glass chromatin were found in only some papillary thyroid carcinomas.
Conclusions
This study shows that the trabecular pattern is a representative cytological feature of FNs that can be used to distinguish FNs from mimicking lesions. In addition, nuclear shape and chromatin pattern can be used to further confirm the diagnosis of FNs from mimicking lesions through FNAC.

Citations

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Diagnostic implication of thyroid spherules for cytological diagnosis of thyroid nodules
Heeseung Sohn, Kennichi Kakudo, Chan Kwon Jung
Cytopathology.2024; 35(3): 383. CrossRef
Using Deep Convolutional Neural Networks for Enhanced Ultrasonographic Image Diagnosis of Differentiated Thyroid Cancer
Wai-Kin Chan, Jui-Hung Sun, Miaw-Jene Liou, Yan-Rong Li, Wei-Yu Chou, Feng-Hsuan Liu, Szu-Tah Chen, Syu-Jyun Peng
Biomedicines.2021; 9(12): 1771. CrossRef
The Role of Fine Needle Aspiration Biopsy with Bethesda System in the Evaluation of Thyroid Nodules
Gizem AKKAŞ AKGÜN, Figen ASLAN
Anadolu Kliniği Tıp Bilimleri Dergisi.2021; 26(1): 23. CrossRef
Comprehensive DNA Methylation Profiling Identifies Novel Diagnostic Biomarkers for Thyroid Cancer
Jong-Lyul Park, Sora Jeon, Eun-Hye Seo, Dong Hyuck Bae, Young Mun Jeong, Yourha Kim, Ja Seong Bae, Seon-Kyu Kim, Chan Kwon Jung, Yong Sung Kim
Thyroid.2020; 30(2): 192. CrossRef
Preoperative diagnostic categories of fine needle aspiration cytology for histologically proven thyroid follicular adenoma and carcinoma, and Hurthle cell adenoma and carcinoma: Analysis of cause of under- or misdiagnoses
Hee Young Na, Jae Hoon Moon, June Young Choi, Hyeong Won Yu, Woo-Jin Jeong, Yeo Koon Kim, Ji-Young Choe, So Yeon Park, Paula Soares
PLOS ONE.2020; 15(11): e0241597. CrossRef

Importance of Individual Ghost Cells in Fine-Needle Aspiration Cytology Diagnosis of Pilomatricoma: Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jae Kyung Myung, Sunhoo Park, Jung-Soon Kim, Myung-Soon Shin, Hye Sil Seol, Jae Soo Koh, Seung-Sook Lee; J Pathol Transl Med. 2018;52(1):45-50. Published online January 15, 2018; DOI: https://doi.org/10.4132/jptm.2017.10.18

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Abstract PDF

Background
Although histological diagnosis of pilomatricoma is not difficult because of its unique histological features, cytological diagnosis through fine-needle aspiration cytology (FNAC) is often problematic due to misdiagnoses as malignancy.
Methods
We reviewed the cytological features of 14 cases of histologically-proven pilomatricoma from Korea Cancer Center Hospital, with a discussion on the diagnostic pitfalls of FNAC.
Results
Among 14 cases of pilomatricoma, 10 (71.4%) were correctly diagnosed through FNAC, and two (14.3%) were misdiagnosed as carcinoma. Cytologically, all cases had easily recognizable clusters of basaloid cells and foreign body-type multinucleated cells. Although ghost cells were also found in all cases, some were inconspicuous and hardly recognizable due to their small numbers.
Conclusions
An accurate diagnosis of pilomatricoma in FNAC is feasible with consideration of clinical information and close examination of ghost cells.

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A case of pilomatricoma with suspected malignancy diagnosed by intraoperative rapid cytological diagnosis
Miho YOSHIDA-TANAKA, Kazuya KURAOKA, Naoko YASUMURA, Arisa KAN, Yumi SAIKI, Akihiro KAGAWA, Akihisa SAITO, Kiyomi TANIYAMA
The Journal of the Japanese Society of Clinical Cytology.2019; 58(3): 133. CrossRef

The Significance of TROP2 Expression in Predicting BRAF Mutations in Papillary Thyroid Carcinoma: Joon Seog Kong, Hyeon Jin Kim, Min-Jung Kim, Areumnuri Kim, Dalnim Lee, Kanghee Han, Sunhoo Park, Jae Soo Koh, Jae Kyung Myung; J Pathol Transl Med. 2018;52(1):14-20. Published online December 11, 2017; DOI: https://doi.org/10.4132/jptm.2017.10.17

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Abstract PDF

Background
Trophoblast antigen 2 (TROP2) is a human trophoblast cell-surface glycoprotein that is overexpressed in several types of epithelial cancers, and is suggested to be associated with an unfavorable prognosis. BRAF mutations are the most common genetic alteration in papillary thyroid carcinoma (PTC). We evaluated the correlation between TROP2 expression and BRAF mutation in PTC.
Methods
First, we carried out pyrosequencing for BRAF mutations and immunohistochemistry for TROP2 expression with a tissue microarray consisting of 52 PTC cases. Membranous staining in at least 5% of tumor cells was designated as positive staining and we analyzed the relationship between TROP2 expression and diverse clinicopathological factors, including BRAF mutation. Second, we tested TROP2 mRNA expression in three thyroid cancer cell lines with BRAF mutations (BCPAP, SNU790, and 8505C) and a normal thyroid cell line. Additionally, we checked TROP2 protein levels in a normal thyroid cell line after introduction of the BRAF V600E mutation.
Results
In this study, 21 of 26 cases with BRAF mutation showed TROP2 immunoreactivity, whereas all 26 cases without BRAF mutation showed no immunoreactivity for TROP2 with a statistically significant difference (p<.001). Upregulation of TROP2 mRNA was observed in all three thyroid cancer cell lines, but not in the normal thyroid cell line. Interestingly, however, the TROP2 expression was increased in the normal thyroid cell line after introduction of the BRAF V600E mutation.
Conclusions
Based on these results, we concluded that TROP2 expression is significantly associated with BRAF mutation and that TROP2 immunohistochemistry could be used for predicting BRAF mutations or diagnosing papillary thyroid carcinoma.

Citations

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Diagnostic and prognostic utility of TROP-2, SLP-2, and CXCL12 expression in papillary thyroid carcinoma
Amany Selim Attia, Samia Hussein, Hend Sameh, Amr Khalil, Ahmad Barakat Waley, Ihab Matar, Reham Sameh
Cancer Biomarkers.2024; 39(3): 211. CrossRef
TROP2 is a Good Indicator for Infiltrative Nature of Carcinoma Rather than Diagnosing Malignancy in Thyroid
E. Kılınc, P. Gunes, A. Doganer
Indian Journal of Otolaryngology and Head & Neck Surgery.2022; 74(S2): 2560. CrossRef
Advances in Trop2-targeted therapy: Novel agents and opportunities beyond breast cancer
Xinlin Liu, Junwen Deng, Yang Yuan, Wujun Chen, Wenshe Sun, Yanhong Wang, Haiming Huang, Bing Liang, Tao Ming, Jialian Wen, Binghuan Huang, Dongming Xing
Pharmacology & Therapeutics.2022; 239: 108296. CrossRef
Knockdown of Trop2 inhibits proliferation and migration and induces apoptosis of endometrial cancer cells via AKT/β‐catenin pathway
Xiaotong Sun, Guangyang Xing, Cui Zhang, Kun Lu, Yuqiong Wang, Xiyan He
Cell Biochemistry and Function.2020; 38(2): 141. CrossRef
Can TROP2 be used as a prognostic marker in endometrioid endometrial carcinoma?
SerkanY Çelik, Özgürİlhan Çelik
Indian Journal of Pathology and Microbiology.2020; 63(3): 418. CrossRef
Diagnostic Value of TROP-2 and CK19 Expression in Papillary Thyroid Carcinoma in Both Surgical and Cytological Specimens
Asmaa Gaber Abdou, Mohammed Shabaan, Rania Abdallha, Nehal Nabil
Clinical Pathology.2019; 12: 2632010X1986304. CrossRef
Evaluation of Diagnostic Utility of Immunohistochemistry Markers of TROP-2 and HBME-1 in the Diagnosis of Thyroid Carcinoma
Nooshin Zargari, Maral Mokhtari
European Thyroid Journal.2019; 8(1): 1. CrossRef
The diagnostic value of TROP-2, SLP-2 and CD56 expression in papillary thyroid carcinoma
Xueyang Yang, Yifang Hu, He Shi, Chengzhou Zhang, Zhixiao Wang, Xiaoyun Liu, Huanhuan Chen, Lijuan Zhang, Dai Cui
European Archives of Oto-Rhino-Laryngology.2018; 275(8): 2127. CrossRef
TROP2 promotes cell proliferation and migration in osteosarcoma through PI3K/AKT signaling
Qing‑Zhi Gu, Abulimiti Nijiati, Xing Gao, Kai‑Liang Tao, Cheng‑Duo Li, Xue‑Peng Fan, Zheng Tian
Molecular Medicine Reports.2018;[Epub] CrossRef

Fine Needle Aspiration Cytology of Parathyroid Lesions: Ilyeong Heo, Sunhoo Park, Chang Won Jung, Jae Soo Koh, Seung-Sook Lee, Hyesil Seol, Hee Seung Choi, Soo Youn Cho; Korean J Pathol. 2013;47(5):466-471. Published online October 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.466

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Abstract PDF

Background

There has been an increase in the use of fine needle aspiration cytology (FNAC) for the diagnosis of parathyroid lesions (PLs). Differentiation between a thyroid lesion and a PL is not easy because of their similar features. We reviewed parathyroid aspirates in our institution and aimed to uncover trends in diagnostic criteria.

Methods

We selected 25 parathyroid aspirates (from 6 men and 19 women) confirmed surgically or immunohistochemically from 2006 to 2011.

Results

Major architectural findings of PLs include scattered naked nuclei, loose clusters, a papillary pattern with a fibrovascular core, tight clusters, and a follicular pattern. These architectures were commonly admixed with one another. Cytological features included anisokaryosis, stippled chromatin, a well-defined cell border, and oxyphilic cytoplasm. Eighteen of the 25 patients were diagnosed with PL using FNAC. Seven patients had been misdiagnosed with atypical cells (n=2), benign follicular cells (n=2), adenomatous goiter (n=2) and metastatic carcinoma (n=1) in FNAC. Using clinicoradiologic data, the sensitivity of the cytological diagnosis was 86.7%. The cytological sensitivity decreased to 50% without this information.

Conclusions

FNAC of PL is easily confused with thyroid lesions. A combination of cytological parameters and clinical data will be required to improve the diagnostic sensitivity of PLs.

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Diagnosis of parathyroid incidentaloma detected on thyroid ultrasonography: the role of fine-needle aspiration cytology and washout parathyroid hormone measurements
Boeun Lee, Sae Rom Chung, Young Jun Choi, Tae-Yon Sung, Dong Eun Song, Tae Yong Kim, Jeong Hyun Lee, Jung Hwan Baek
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Shravan V. Gowrishankar, Rohan Bidaye, Tilak Das, Veronika Majcher, Brian Fish, Ruth Casey, Liam Masterson
Head & Neck.2023; 45(3): 706. CrossRef
A stepwise approach to fine needle aspiration cytology of lymph nodes
Yosep Chong, Gyeongsin Park, Hee Jeong Cha, Hyun-Jung Kim, Chang Suk Kang, Jamshid Abdul-Ghafar, Seung-Sook Lee
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Uma Kundu, Qiong Gan, Deepak Donthi, Nour Sneige
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Case presentation of the smallest non-functional parathyroid carcinoma and review of the literature
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Ruhani Sardana, Rita Abi‐Raad, Adebowale J. Adeniran, Guoping Cai
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The Value of Preoperative and Intraoperative Ultrasound in the Localization of Intrathyroidal Parathyroid Adenomas
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Sanna Steen, Martin Hysek, Jan Zedenius, Henrik Falhammar, Carl Christofer Juhlin
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Non‐secreting parathyroid carcinoma in a dog
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Cytomorphologic features distinguishing Bethesda category IV thyroid lesions from parathyroid
Simon Sung, Anjali Saqi, Elizabeth M. Margolskee, John P. Crapanzano
CytoJournal.2017; 14: 10. CrossRef
Core-needle biopsy for the preoperative diagnosis of follicular neoplasm in thyroid nodule screening: A validation study
Sung Hak Lee, Gyeong Sin Park, So Lyung Jung, Min-Hee Kim, Ja Seong Bae, Dong Jun Lim, Chan Kwon Jung
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Charu Agarwal, Manju Kaushal
Diagnostic Cytopathology.2016; 44(8): 704. CrossRef
Intrathyroidal parathyroid adenoma: Diagnostic pitfalls on fine‐needle aspiration: Two case reports and literature review
Chang Shi, Hongwei Guan, Wenjing Qi, Jialin Ji, Jialing Wu, Feng Yan, Huali Wang
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PARATHYROID CYTOLOGY: A DIAGNOSTIC DILEMMA
Naval Kishore Bajaj, Shrinivas Somalwar, Akhtar Mohammad, Ezhil Arasi Nagamuthu
Journal of Evidence Based Medicine and Healthcare.2016; 3(71): 3849. CrossRef
Fine-Needle Aspiration Cytology of Parathyroid Lesions
Teklu Legesse, Paul N. Staats
Pathology Case Reviews.2015; 20(5): 227. CrossRef
A nonfunctioning parathyroid carcinoma misdiagnosed as a follicular thyroid nodule
Filomena Cetani, Gianluca Frustaci, Liborio Torregrossa, Silvia Magno, Fulvio Basolo, Alberto Campomori, Paolo Miccoli, Claudio Marcocci
World Journal of Surgical Oncology.2015;[Epub] CrossRef

Fine-Needle Aspiration Cytology of Pleomorphic Carcinomas of the Lung: Hee Seung Choi, Hyesil Seol, Il Yeong Heo, Chang Won Jung, Soo Youn Cho, Sunhoo Park, Jae Soo Koh, Seung-Sook Lee; Korean J Pathol. 2012;46(6):576-582. Published online December 26, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.6.576

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Abstract PDF

Background

Pleomorphic carcinoma (PC) is a rare pulmonary malignancy. Because of its rarity and histological heterogeneity, cytopathologists might suspect PC only rarely on the basis of its cytological specimen. In addition, cytological findings from fine needle aspiration (FNA) specimens have rarely been described. Hence, we investigated the cytological features of FNA in the cases of PC.

Methods

We reviewed 7 FNA specimens of PC. The patients had undergone surgical resection at the Korea Cancer Center Hospital between 2007 and 2011. The cytological features of PC were assessed and compared with the histopathological features of the corresponding surgical specimen. Immunocytochemical analysis with cytokeratin and vimentin was performed on the cell blocks.

Results

The tumor cells were either dispersed or arranged in loose aggregates, and generally lacked any glandular or squamous differentiation. Pleomorphic or spindle shape tumor cells were observed, and mono-, bi-, or multi-nucleated giant cells were frequently observed. The background showed necrosis and contained numerous lymphocytes and neutrophils. Immunocytochemically, the tumor cells were positive for cytokeratin and vimentin.

Conclusions

PC displays characteristic cytological features. It might therefore be possible to make an accurate diagnosis of PC by assessing the degree of nuclear atypia.

Citations

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Sarcomatoid carcinoma in cytology: Report of a rare entity presenting in pleural and pericardial fluid preparations
Atreyee Basu, Andre L. Moreira, Anthony Simms, Tamar C. Brandler
Diagnostic Cytopathology.2019; 47(8): 813. CrossRef
Cytological Evaluation of Pleomorphic Carcinoma of the Lung
Kevin Kuan, Samer N. Khader, Siba El Hussein
Diagnostic Cytopathology.2019; 47(9): 961. CrossRef
Combined small cell carcinoma with giant cell carcinoma component of the lung: A case successfully diagnosed by computed tomography‑guided fine‑needle aspiration cytology
Yusuke Ebisu, Mitsuaki Ishida, Tomohito Saito, Tomohiro Murakawa, Yoshiko Uemura, Koji Tsuta
Oncology Letters.2017;[Epub] CrossRef
Pulmonary Pleomorphic Carcinoma Detected as a Result of Pneumothorax and the Subsequent Occurrence of Multiple Cystic Metastases
Hideaki Yamakawa, Masahiro Yoshida, Masami Yabe, Yuri Baba, Emiri Baba, Hiroaki Katagi, Takeo Ishikawa, Masamichi Takagi, Takeo Nakada, Tadashi Akiba, Kazuyoshi Kuwano
Case Reports in Medicine.2014; 2014: 1. CrossRef
Pulmonary pleomorphic carcinoma with multiple metastases to the right posterior knee complicated by paraneoplastic hypercalcemia
PENG-FEI LI, CHENG-HSIANG LO, SHAN-HAN YANG, PING-YING CHUNG, CHING-LIANG HO
Oncology Letters.2014; 7(2): 452. CrossRef

Case Report

Primary Monophasic Synovial Sarcoma Arising in the Mesentery: Case Report of an Extremely Rare Mesenteric Sarcoma Confirmed by Molecular Detection of a SYT-SSX2 Fusion Transcript: Han Suk Ryu, Ilyeong Heo, Jae Soo Koh, Sung-Ho Jin, Hye Jin Kang, Soo Youn Cho; Korean J Pathol. 2012;46(2):187-191. Published online April 25, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.2.187

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Abstract PDF

Synovial sarcoma arises in the para-articular tissues, and it can also occur in various unexpected sites. We report a rare case of primary monophasic synovial sarcoma (MSS) arising in the mesentery. A 59-year-old man presented with a palpable abdominal mass. On microscopic examination, the entire tumor comprised a dense proliferation of the spindle cells without epithelial components. The tumor cells were positive for transducin-like enhancer of split 1, bcl-2, epithelial membrane antigen and CD99 but negative for CD34, CD117, alpha-smooth muscle actin, cytokeratin, and calretinin on immunohistochemistry. The reverse transcriptase-polymerase chain reaction revealed a single 151-bp fragment representing the SYT-SSX2 fusion transcript. Because mesenteric MSS is extremely rare and many cases display histologic findings that overlap with those of more frequently involved tumors such as hemangiopericytoma and gastrointestinal stromal tumor, there is a chance of making an incorrect diagnosis that can result in an inappropriate treatment.

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A case of primary mesenteric synovial sarcoma: a challenging presentation
Nihed Abdessayed, Malek Barka, Samiha Mabrouk, Zeineb Nfikha, Zeineb Maatoug, Yosra Fejji, Mohamed Salah Jarrar, Sabri Youssef, Moncef Mokni
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Original Article

Lyn Expression in Osteoblastic Osteosarcoma Tissues and Its Correlation with Clinicopathologic Factors.: Min Sun Jin, Shin Kwang Khang, Min Suk Kim, Hee Seung Choi, Jung Eun Lee, Kil Ho Kim, Dae Geun Jeon, Jae Soo Koh; Korean J Pathol. 2010;44(2):125-131.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.2.125

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Abstract PDF

BACKGROUND
The Src family kinases (SFKs) are involved in multiple aspects of tumorigenesis, such as, proliferation, migration, and angiogenesis, and are involved in the generation and progression of many types of tumors. Furthermore, dasatinib, a general SFKs inhibitor was recently approved for use in chronic myeloid leukemia. This study was performed to evaluate the expression of Lyn, a member of the SFKs, in osteosarcoma tissues.
METHODS
One hundred and sixteen patients with osteoblastic osteosarcoma were selected for Lyn expression analysis. The correlation between Lyn expression in tumor sections and patients' clinicopathologic characteristics and the prognostic significance of Lyn expression were evaluated.
RESULTS
Lyn was found to be expressed in 52 of the 116 patients (44.8%), and Lyn positive tumor was found to be significantly associated with a lytic tumor pattern on plain radiographs (p = 0.04). Furthermore, those positive for Lyn showed longer metastasis free survival (5-year metastasis free survival, 65.2% for Lyn positive and 46.8% for Lyn negative; p = 0.06), though this was only marginally significant.
CONCLUSIONS
Lyn was found to be overexpressed in osteosarcoma tissues, and this overexpression was found to be correlated with osteolysis.

Citations

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Eight Aging-Related Genes Prognostic Signature for Cervical Cancer
Meilin Yin, Yanhua Weng, Ferenc Olasz
International Journal of Genomics.2023; 2023: 1. CrossRef
LYN expression predicts the response to dasatinib in a subpopulation of lung adenocarcinoma patients
Yu Jin Kim, Sungyoul Hong, Minjung Sung, Min Jeong Park, Kyungsoo Jung, Ka-Won Noh, Doo-Yi Oh, Mi-Sook Lee, Ensel Oh, Young Kee Shin, Yoon-La Choi
Oncotarget.2016; 7(50): 82876. CrossRef

Case Report

Fine Needle Aspiration Cytologic Features of Well-Differentiated Papillary Mesothelioma in the Pleura: A Case Report.: Han Suk Ryu, Min Sun Jin, Hee Seung Choi, HeeJong Baek, Jae Soo Koh; Korean J Pathol. 2009;43(6):583-588.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.583

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Abstract PDF

Well-differentiated papillary mesothelioma (WDPM) is a rare subtype of malignant mesothelioma, which is considered to have low malignant potential. Because of its rare occurrence in the pleura, cytopathologists are not familiar with the cytologic features of WDPM, and to date only one report regarding the cytomorphology of aspiration biopsies of WDPM in pleura has been released. The authors present the findings of fine needle aspiration cytology of WDPM in the pleura in a 53-year-old woman. Aspiration smears showed papillary clusters composed of one to three layers of surface tumor cells and a central hyalinized stromal core. Tumor cells were round, ovoid, and spindle like with minimally atypical nuclei and small conspicuous nucleoli. Mitotic activity was virtually absent. Excisional biopsy histologic and immunohistochemical findings were wholly compatible with WDPM findings. Knowledge of the specific cytologic findings of WDPM is crucial for accurate diagnosis and appropriate treatment.

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Well-Differentiated Papillary Mesothelioma of the Peritoneum
Jitendra G. Nasit, Gauravi Dhruva
American Journal of Clinical Pathology.2014; 142(2): 233. CrossRef

Review

Fine Needle Aspiration Cytologic Findings of Pulmonary Neuroendocrine Tumors.: Jae Soo Koh; Korean J Cytopathol. 2008;19(1):9-15.; DOI: https://doi.org/10.3338/kjc.2008.19.1.9

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Abstract PDF: The major categories of neuroendocrine tumors of lung are typical carcinoid, atypical carcinoid, large cell neuroendocrine carcinoma, and small cell carcinoma. The histologic classification criteria of neuroendocrine tumors are well documented in the "WHO Classification of Tumors" based on mitotic figures and necrosis. Cytologic characteristics of neuroendocrine tumors are trabecular, acinar, and solid arrangement of tumor cells and occasional rosette formation. Nuclear chromatin patterns are characteristically described as "salt and pepper chromatin pattern". Many of cytologic classifications documented in the literature are before the "WHO Classification". In this review, the cytologic features of pulmonary neuroendocrine tumors are documented according to the WHO classification, and recent concepts of neuroendocrine tumors of lung are discussed.

Case Reports

Coexisting Adenocarcinoma and Epithelioid Leiomyosarcoma of Stomach: A case report.: Jung Youn Kim, Jae Soo Koh, Kyung Ja Cho, Ja June Jang; Korean J Pathol. 1995;29(4):521-523.

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Abstract PDF: We report a case of malignant tumor of the stomach showing both carcinoma and sarcoma components in a 47 year-old woman. The resected stomach revealed two tumors which were in different location. The one mass was a 2 x I cm, poorly demarcated tumor at the body, along the lesser curvature and the other was a 6 x 7 cm, well demarcated polypoid tumor with a central depression at cardia of the posterior stomach wall. The tumor at the body was a poorly differentiated adenocarcinoma which showed strong reactivity for CEA. The tumor at the cardia was composed of epithelioid or spindle shaped cells with abundant eosinophilic cytoplasm and revealed 5-6 mitoses per ten high power field. The tumor at the cardia was diagnosed as epithelioid leiomyosarcoma and showed reactivity for vimentin but none for actin, desmin,keratin, and CEA. This is different from the usual carcinosarcoma.

Adenoma of Retinal Pigment Epithelium: A case report.: Jae Soo Koh, Je G Chi; Korean J Pathol. 1996;30(11):1053-1056.

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Abstract PDF: A retinal pigment epithelium tumor is extremely rare, and the distinction from malignant melanoma or reactive hyperplasia of pigment epithelium is mandatory, clinically or pathologically. We report a case of adenoma of retinal pigment epithelium. A 21 year-old female presented with a sudden decrease of visual acuity. She had no previous inflammatory ocular disease. Fundic examination revealed an elevated mass at the temporal side of the right eye. With the suspicion of choroidal malignant melanoma, a right eye enucleation was done. Grossly there was a 0.7x0.5 cm dark soft broad-based elevated lesion in the temporal side. The anterior border was the ora serrata, and the posterior border reached the equatorial area. The tumor was confined to the intraocular portion. Histologically, the tumor mass was composed of the cuboidal or columnar cells arranged in papillary, trabecular, or solid pattern with fine fibrovascular stroma. The tumor cells were heavily pigmented. The cytoplasmic border of the tumor cell was indistinct and there was a finely granular brown pigment diffusely scattered in the cytoplasm. Mild anisokaryosis noted, but hyperchromatism or pleomorphism were negligible. The nucleoli were small. A transition between normal retinal pigment epithelium and tumor mass was noted. Reactive gliosis was noted at the periphery of the tumor.

Intraductal Cystic Hypersecretory Carcinoma of the Breast: A case report.: Jin Haeng Chung, Seung Sook Lee, Jae Soo Koh, Kyung Ja Cho, Jong Inn Lee; Korean J Pathol. 1999;33(2):137-140.

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Abstract: The cystic hypersecretory duct carcinoma of the breast was first described in 1984 by Rosen and Scott and warrants separate discussion because of its unusual pathological features. It is morphologically distinguishable from juvenile (secretory) carcinoma and from mucinous (colloid) carcinoma or mucocele-like tumor. We present a case report of intraductal cystic hypersecretory carcinoma of the breast with hormone receptor and oncogene study. The histologic differential diagnosis, with an emphasis on benign lesions that may have a predominant cystic component, is also discussed.

Original Articles

Analytic study of 362 bile cytologic materials.: Jae Soo Koh, Chang Won Ha, Na Hye Myong, Kyung Ja Cho, Ja June Jang; Korean J Cytopathol. 1991;2(2):73-78.

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Abstract PDF: No abstract available.

Background cytologic features of metastatic carcinomas in the liver in fine needle aspiration cytology: analysis of 20 cases-.: Na Hye Myong, Jae Soo Koh, Chang Won Ha, Kyung Ja Cho, Ja June Jang; Korean J Cytopathol. 1991;2(2):90-97.

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Abstract PDF: No abstract available.

Fine needle aspiration cytology of the breast.: Kyung Ja Cho, Jae Soo Koh, Chang Won Han, Ja June Jang; Korean J Cytopathol. 1992;3(2):52-59.

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Abstract PDF: No abstract available.

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