Journal of Pathology and Translational Medicine

Original Article

Establishing molecular pathology curriculum for pathology trainees and continued medical education: a collaborative work from the Molecular Pathology Study Group of the Korean Society of Pathologists: Jiwon Koh, Ha Young Park, Jeong Mo Bae, Jun Kang, Uiju Cho, Seung Eun Lee, Haeyoun Kang, Min Eui Hong, Jae Kyung Won, Youn-La Choi, Wan-Seop Kim, Ahwon Lee; J Pathol Transl Med. 2023;57(5):265-272. Published online September 15, 2023; DOI: https://doi.org/10.4132/jptm.2023.08.26

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Abstract PDF: Background
The importance of molecular pathology tests has increased during the last decade, and there is a great need for efficient training of molecular pathology for pathology trainees and as continued medical education.
Methods
The Molecular Pathology Study Group of the Korean Society of Pathologists appointed a task force composed of experienced molecular pathologists to develop a refined educational curriculum of molecular pathology. A 3-day online educational session was held based on the newly established structure of learning objectives; the audience were asked to score their understanding of 22 selected learning objectives before and after the session to assess the effect of structured education.
Results
The structured objectives and goals of molecular pathology was established and posted as a web-based interface which can serve as a knowledge bank of molecular pathology. A total of 201 pathologists participated in the educational session. For all 22 learning objectives, the scores of self-reported understanding increased after educational session by 9.9 points on average (range, 6.6 to 17.0). The most effectively improved items were objectives from next-generation sequencing (NGS) section: ‘NGS library preparation and quality control’ (score increased from 51.8 to 68.8), ‘NGS interpretation of variants and reference database’ (score increased from 54.1 to 68.0), and ‘whole genome, whole exome, and targeted gene sequencing’ (score increased from 58.2 to 71.2). Qualitative responses regarding the adequacy of refined educational curriculum were collected, where favorable comments dominated.
Conclusions
Approach toward the education of molecular pathology was refined, which would greatly benefit the future trainees.

Brief Case Report

Intrahepatic Cholangiocarcinoma with Ductal Plate Malformation-like Feature Associated with Bile Duct Adenoma: Ah-Young Kwon, Hye Jin Lee, Hee Jung An, Haeyoun Kang, Jin-Hyung Heo, Gwangil Kim; J Pathol Transl Med. 2015;49(6):531-534. Published online July 31, 2015; DOI: https://doi.org/10.4132/jptm.2015.06.19

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Citations

Citations to this article as recorded by

Histopathological evidence of intrahepatic cholangiocarcinoma occurring in ductal plate malformation: A clinicopathologic study of 5 cases
Qian Wang, Yi Xu, Shou-Mei Wang, Ai-Yan Hu, Yun-Cui Pan, Shu-Hui Zhang
Annals of Diagnostic Pathology.2021; 55: 151828. CrossRef
Cholangiolocellular Carcinoma Arising in a Normal Liver
Chie Kitami, Yasuyuki Kawachi, Toshihiko Igarashi, Shigeto Makino, Atsushi Nishimura, Mikako Kawahara, Keiya Niikuni, Kenichi Harada
The Japanese Journal of Gastroenterological Surgery.2016; 49(10): 1006. CrossRef

Case Report

A Case of Ovarian Microinvasive Mucinous Carcinoma and Co-existent Angiosarcoma.: Jin Hyung Heo, Yoon Hee Lee, Gwang Il Kim, Tae Heon Kim, Haeyoun Kang, Hee Jung An, Bo Sung Yoon, Seok Ju Seong, Hyun Park, Ji Young Kim; Korean J Pathol. 2011;45(1):96-100.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.96

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Abstract PDF

Primary ovarian angiosarcoma is very rare with only 27 cases reported so far in the medical literature. We report here on a rare case of ovarian microinvasive mucinous carcinoma that was coexistent with angiosarcoma in a 54-year-old woman. The tumor was a 26x19x10 cm-sized multilocular cystic mass with a 4x3 cm-sized solid hematoma-like nodule in the center. Microscopically, it was composed mostly of mucinous tumor of various grades from borderline to microinvasive carcinoma. The hematoma-like area turned out to be an angiosarcoma, composed of pleomorphic cells that formed slit-like spaces, spindle cells that formed short fascicles and anastomosing vascular channels with atypical endothelial cells. All these cells were positive for CD31, CD34 and factor VIII-related antigen. The patient developed peritoneal and pleural metastases, which were angiosarcoma and mucinous carcinoma, respectively. We believe this case is only the fourth example of an ovarian collision tumor of angiosarcoma and surface epithelial tumor.

Citations

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Tumor to Tumor Metastasis: A Case Report of Metastatic Angiosarcoma to an Ovarian Brenner Tumor and Review of the Literature
Bilge Dundar, Audai Alrwashdeh, Laila Dahmoush
International Journal of Gynecological Pathology.2023; 42(2): 176. CrossRef
Collision Tumors in Ovary: Case Series and Literature Review
Borges A, Loddo A, Martins A, Peiretti M, Fanni D, Djokovic D
Journal of Surgical Oncology.2019; : 1. CrossRef
Angiosarcoma Arising in Ovarian Mucinous Tumor: A Challenge in Intraoperative Frozen Section Diagnosis
Surapan Khunamornpong, Jongkolnee Settakorn, Kornkanok Sukpan, Tip Pongsuvareeyakul, Sumalee Siriaunkgul
Case Reports in Pathology.2016; 2016: 1. CrossRef
Impact of body burden of pesticide residues on the reproductive tract of buffalo
KARANPREET KAUR, SARVPREET SINGH GHUMAN, OPINDER SINGH, JASBIR SINGH BEDI, JATINDER PAUL SINGH GILL
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Original Articles

The Loss of E-cadherin is Associated with the Epigenetic Alteration of CDH1 in Breast Cancer and it is also Associated with an Abnormal beta-catenin Expression in Lobular Carcinoma.: Gwangil Kim, Ji Young Kim, Hee Jung An, Haeyoun Kang, Tae Heon Kim, Jung Yon Shim, Jin Hyung Heo, Hai Lin Park, Young Kil Choi; Korean J Pathol. 2009;43(5):400-407.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.5.400

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Abstract PDF

BACKGROUND
APC and E-cadherin are the key molecules in the Wnt/beta-catenin pathway. We attempted to define the epigenetic alteration of APC and CDH1 (the E-cadherin gene) and the expression of Wnt-related molecules in human mammary carcinomas.
METHODS
Sixty-four mammary carcinomas, including 52 invasive ductal carcinomas (IDCs) and 12 invasive lobular carcinomas (ILCs), were evaluated using methylation-specific PCR and immunohistochemistry. We performed immunohistochemistry for E-cadherin, beta-catenin, APC, Wnt1, cyclin D1, ER, PR and C-erb B2.
RESULTS
Hypermethylation of APC and CDH1 was observed in 38 (59%) and 28 (44%) cases, respectively. CDH1 hypermethylation in ILCs was increased compared to that in IDCs (p=0.002) and it was associated with the loss of E-cadherin (p=0.02) and beta-catenin (p=0.042). APC methylation was positively correlated with the ER expression (p=0.021). Abnormal cytoplasmic localization of beta-catenin was found in 10 cases and any expression was not detected in six cases. In ILCs, the E-cadherin or beta-catenin expression was markedly decreased compared to that in IDCs (p<0.001 in both).
CONCLUSIONS
Methylation of APC or CDH1 was relatively frequent in mammary carcinomas. The loss of E-cadherin in mammary carcinoma was associated with CDH1 methylation, and abnormal beta-catenin expression was related to the loss of E-cadherin in ILC.

Citations

Citations to this article as recorded by

Wnt/β-catenin signaling pathway activation reverses gemcitabine resistance by attenuating Beclin1-mediated autophagy in the MG63 human osteosarcoma cell line
Hao Tao, Feng Chen, Haifei Liu, Yanling Hu, Yingzhen Wang, Haiyan Li
Molecular Medicine Reports.2017; 16(2): 1701. CrossRef

beta-Catenin Expression in Gastric Carcinogenesis.: Haeyoun Kang, Yon Rak Choi, Hoguen Kim; Korean J Pathol. 2001;35(5):376-382.

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Abstract PDF: BACKGROUND
The molecular pathogenesis of gastric carcinoma is not yet well characterized. The purpose of this study is to assess the role of beta-catenin in gastric carcinogenesis.
METHODS
We analyzed beta-catenin expression using immunohistochemistry on 68 gastric adenomas and 34 gastric adenocarcinomas, and compared the result with pathological and molecular types of tumors and E-cadherin expression.
RESULTS
Nuclear expression of beta-catenin was noted more frequently in gastric adenomas than in carcinomas (40% vs. 21%, 0.05< or = P<1). There was no significant relationship between nuclear beta-catenin expression and histologic degree of adenoma, histologic type of carcinoma or microsatellite instability. E-cadherin expression showed significantly more frequent decrease in the membrane stainability of carcinomas compared to adenomas (P<0.01).
CONCLUSIONS
The frequent nuclear beta-catenin expression in gastric adenomas suggests that the beta-catenin alteration might play an early role in gastric carcinogenesis.

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