Journal of Pathology and Translational Medicine

Mee Soo Chang

7 Articles

A standardized pathology report for gastric cancer: 2nd edition: Young Soo Park, Myeong-Cherl Kook, Baek-hui Kim, Hye Seung Lee, Dong-Wook Kang, Mi-Jin Gu, Ok Ran Shin, Younghee Choi, Wonae Lee, Hyunki Kim, In Hye Song, Kyoung-Mee Kim, Hee Sung Kim, Guhyun Kang, Do Youn Park, So-Young Jin, Joon Mee Kim, Yoon Jung Choi, Hee Kyung Chang, Soomin Ahn, Mee Soo Chang, Song-Hee Han, Yoonjin Kwak, An Na Seo, Sung Hak Lee, Mee-Yon Cho; J Pathol Transl Med. 2023;57(1):1-27. Published online January 15, 2023; DOI: https://doi.org/10.4132/jptm.2022.12.23

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The first edition of ‘A Standardized Pathology Report for Gastric Cancer’ was initiated by the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists and published 17 years ago. Since then, significant advances have been made in the pathologic diagnosis, molecular genetics, and management of gastric cancer (GC). To reflect those changes, a committee for publishing a second edition of the report was formed within the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists. This second edition consists of two parts: standard data elements and conditional data elements. The standard data elements contain the basic pathologic findings and items necessary to predict the prognosis of GC patients, and they are adequate for routine surgical pathology service. Other diagnostic and prognostic factors relevant to adjuvant therapy, including molecular biomarkers, are classified as conditional data elements to allow each pathologist to selectively choose items appropriate to the environment in their institution. We trust that the standardized pathology report will be helpful for GC diagnosis and facilitate large-scale multidisciplinary collaborative studies.

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Spatial and Temporal Tumor Heterogeneity in Gastric Cancer: Discordance of Predictive Biomarkers
Hye Seung Lee
Journal of Gastric Cancer.2025; 25(1): 192. CrossRef
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Yunjoo Cho, Soomin Ahn, Kyoung-Mee Kim
Journal of Gastric Cancer.2025; 25(1): 177. CrossRef
Korean Gastric Cancer Association-Led Nationwide Survey on Surgically Treated Gastric Cancers in 2023
Dong Jin Kim, Jeong Ho Song, Ji-Hyeon Park, Sojung Kim, Sin Hye Park, Cheol Min Shin, Yoonjin Kwak, Kyunghye Bang, Chung-sik Gong, Sung Eun Oh, Yoo Min Kim, Young Suk Park, Jeesun Kim, Ji Eun Jung, Mi Ran Jung, Bang Wool Eom, Ki Bum Park, Jae Hun Chung, S
Journal of Gastric Cancer.2025; 25(1): 115. CrossRef
A Comprehensive and Comparative Review of Global Gastric Cancer Treatment Guidelines: 2024 Update
Sang Soo Eom, Keun Won Ryu, Hye Sook Han, Seong-Ho Kong
Journal of Gastric Cancer.2025; 25(1): 153. CrossRef
Korea, Japan, Europe, and the United States: Why are guidelines for gastric cancer different?
Emily E. Stroobant, Seong-Ho Kong, Maria Bencivenga, Takahiro Kinoshita, Tae-Han Kim, Takeshi Sano, Giovanni de Manzoni, Han-Kwang Yang, Yuko Kitagawa, Vivian E. Strong
Gastric Cancer.2025; 28(4): 559. CrossRef
Genomic and Transcriptomic Characterization of Gastric Cancer with Bone Metastasis
Sujin Oh, Soo Kyung Nam, Keun-Wook Lee, Hye Seung Lee, Yujun Park, Yoonjin Kwak, Kyu Sang Lee, Ji-Won Kim, Jin Won Kim, Minsu Kang, Young Suk Park, Sang-Hoon Ahn, Yun-Suhk Suh, Do Joong Park, Hyung Ho Kim
Cancer Research and Treatment.2024; 56(1): 219. CrossRef
Microscopic tumor mapping of post-neoadjuvant therapy pancreatic cancer specimens to predict post-surgical recurrence: A prospective cohort study
Yeshong Park, Yeon Bi Han, Jinju Kim, MeeYoung Kang, Boram Lee, Eun Sung Ahn, Saemi Han, Haeryoung Kim, Hee-Young Na, Ho-Seong Han, Yoo-Seok Yoon
Pancreatology.2024; 24(4): 562. CrossRef
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Interpretation of PD-L1 expression in gastric cancer: summary of a consensus meeting of Korean gastrointestinal pathologists
Soomin Ahn, Yoonjin Kwak, Gui Young Kwon, Kyoung-Mee Kim, Moonsik Kim, Hyunki Kim, Young Soo Park, Hyeon Jeong Oh, Kyoungyul Lee, Sung Hak Lee, Hye Seung Lee
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Pathology - Research and Practice.2024; 263: 155628. CrossRef
Clinicopathological analysis of claudin 18.2 focusing on intratumoral heterogeneity and survival in patients with metastatic or unresectable gastric cancer
T.-Y. Kim, Y. Kwak, S.K. Nam, D. Han, D.-Y. Oh, S.-A. Im, H.S. Lee
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Pathological Interpretation of Gastric Tumors in Endoscopic Submucosal Dissection
Jung Yeon Kim
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Baek-hui Kim, Sung Hak Lee
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2023; 23(2): 143. CrossRef
Endoscopic submucosal dissection hands-on training with artificial mucosal layer EndoGEL
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Standardization of the pathologic diagnosis of appendiceal mucinous neoplasms: Dong-Wook Kang, Baek-hui Kim, Joon Mee Kim, Jihun Kim, Hee Jin Chang, Mee Soo Chang, Jin-Hee Sohn, Mee-Yon Cho, So-Young Jin, Hee Kyung Chang, Hye Seung Han, Jung Yeon Kim, Hee Sung Kim, Do Youn Park, Ha Young Park, So Jeong Lee, Wonae Lee, Hye Seung Lee, Yoo Na Kang, Younghee Choi; J Pathol Transl Med. 2021;55(4):247-264. Published online July 8, 2021; DOI: https://doi.org/10.4132/jptm.2021.05.28

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Abstract PDF Supplementary Material

Although the understanding of appendiceal mucinous neoplasms (AMNs) and their relationship with disseminated peritoneal mucinous disease have advanced, the diagnosis, classification, and treatment of AMNs are still confusing for pathologists and clinicians. The Gastrointestinal Pathology Study Group of the Korean Society of Pathologists (GPSG-KSP) proposed a multicenter study and held a workshop for the “Standardization of the Pathologic Diagnosis of the Appendiceal Mucinous Neoplasm” to overcome the controversy and potential conflicts. The present article is focused on the diagnostic criteria, terminologies, tumor grading, pathologic staging, biologic behavior, treatment, and prognosis of AMNs and disseminated peritoneal mucinous disease. In addition, GPSG-KSP proposes a checklist of standard data elements of appendiceal epithelial neoplasms to standardize pathologic diagnosis. We hope the present article will provide pathologists with updated knowledge on how to handle and diagnose AMNs and disseminated peritoneal mucinous disease.

Citations

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Intrasplenic metastasis of appendiceal low-grade mucinous neoplasm – A case report and review of the literature
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Lower Gastrointestinal Bleeding Secondary to Appendiceal Mucinous Neoplasm: A Report of Two Cases and a Review of the Literature
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A Case of Low-Grade Appendiceal Mucinous Neoplasm: The Role of Preoperative Imaging and Surgical Technique in Achieving Favorable Outcomes
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Incidental Appendiceal Mucinous Neoplasm Found During Appendectomy in a 15-Year-Old Patient: A Case Report
Fernando Aguilar-Ruiz, Kevin Joseph Fuentes-Calvo, Sara Fernanda Arechavala-Lopez, Irving Fuentes-Calvo, Luis F Arias-Ruiz
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Experimental and Therapeutic Medicine.2023;[Epub] CrossRef
Primary and secondary tumors of the peritoneum: key imaging features and differential diagnosis with surgical and pathological correlation
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Anne Kristin Fischer, Andrea Tannapfel, Alexander Quaas
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Marian Constantin, Cristina Mătanie, Livia Petrescu, Alexandra Bolocan, Octavian Andronic, Coralia Bleotu, Mihaela Magdalena Mitache, Sorin Tudorache, Corneliu Ovidiu Vrancianu
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Standardized Pathology Report for Colorectal Cancer, 2nd Edition: Baek-hui Kim, Joon Mee Kim, Gyeong Hoon Kang, Hee Jin Chang, Dong Wook Kang, Jung Ho Kim, Jeong Mo Bae, An Na Seo, Ho Sung Park, Yun Kyung Kang, Kyung-Hwa Lee, Mee Yon Cho, In-Gu Do, Hye Seung Lee, Hee Kyung Chang, Do Youn Park, Hyo Jeong Kang, Jin Hee Sohn, Mee Soo Chang, Eun Sun Jung, So-Young Jin, Eunsil Yu, Hye Seung Han, Youn Wha Kim; J Pathol Transl Med. 2020;54(1):1-19. Published online November 13, 2019; DOI: https://doi.org/10.4132/jptm.2019.09.28

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1,253 Download
42 Web of Science
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Abstract PDF Supplementary Material

The first edition of the ‘Standardized Pathology Report for Colorectal Cancer,’ which was developed by the Gastrointestinal Pathology Study Group (GIP) of the Korean Society of Pathologists, was published 13 years ago. Meanwhile, there have been many changes in the pathologic diagnosis of colorectal cancer (CRC), pathologic findings included in the pathology report, and immunohistochemical and molecular pathology required for the diagnosis and treatment of colorectal cancer. In order to reflect these changes, we (GIP) decided to make the second edition of the report. The purpose of this standardized pathology report is to provide a practical protocol for Korean pathologists, which could help diagnose and treat CRC patients. This report consists of “standard data elements” and “conditional data elements.” Basic pathologic findings and parts necessary for prognostication of CRC patients are classified as “standard data elements,” while other prognostic factors and factors related to adjuvant therapy are classified as “conditional data elements” so that each institution could select the contents according to the characteristics of the institution. The Korean version is also provided separately so that Korean pathologists can easily understand and use this report. We hope that this report will be helpful in the daily practice of CRC diagnosis.

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Molecular Testing for Gastrointestinal Cancer: Hye Seung Lee, Woo Ho Kim, Yoonjin Kwak, Jiwon Koh, Jeong Mo Bae, Kyoung-Mee Kim, Mee Soo Chang, Hye Seung Han, Joon Mee Kim, Hwal Woong Kim, Hee Kyung Chang, Young Hee Choi, Ji Y. Park, Mi Jin Gu, Min Jin Lhee, Jung Yeon Kim, Hee Sung Kim, Mee-Yon Cho; J Pathol Transl Med. 2017;51(2):103-121. Published online February 19, 2017; DOI: https://doi.org/10.4132/jptm.2017.01.24

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Abstract PDF

With recent advances in molecular diagnostic methods and targeted cancer therapies, several molecular tests have been recommended for gastric cancer (GC) and colorectal cancer (CRC). Microsatellite instability analysis of gastrointestinal cancers is performed to screen for Lynch syndrome, predict favorable prognosis, and screen patients for immunotherapy. The epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor has been approved in metastatic CRCs with wildtype RAS (KRAS and NRAS exon 2–4). A BRAF mutation is required for predicting poor prognosis. Additionally, amplification of human epidermal growth factor receptor 2 (HER2) and MET is also associated with resistance to EGFR inhibitor in metastatic CRC patients. The BRAF V600E mutation is found in sporadic microsatellite unstable CRCs, and thus is helpful for ruling out Lynch syndrome. In addition, the KRAS mutation is a prognostic biomarker and the PIK3CA mutation is a molecular biomarker predicting response to phosphoinositide 3-kinase/AKT/mammalian target of rapamycin inhibitors and response to aspirin therapy in CRC patients. Additionally, HER2 testing should be performed in all recurrent or metastatic GCs. If the results of HER2 immunohistochemistry are equivocal, HER2 silver or fluorescence in situ hybridization testing are essential for confirmative determination of HER2 status. Epstein-Barr virus–positive GCs have distinct characteristics, including heavy lymphoid stroma, hypermethylation phenotype, and high expression of immune modulators. Recent advances in next-generation sequencing technologies enable us to examine various genetic alterations using a single test. Pathologists play a crucial role in ensuring reliable molecular testing and they should also take an integral role between molecular laboratories and clinicians.

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Differential Features of Microsatellite-Unstable Colorectal Carcinomas Depending on EPCAM Expression Status: Jung Ho Kim, Jeong Mo Bae, Kyung-Ju Kim, Ye-Young Rhee, Younghoon Kim, Nam-Yun Cho, Hye Seung Lee, Mee Soo Chang, Gyeong Hoon Kang; Korean J Pathol. 2014;48(4):276-282. Published online August 26, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.4.276

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Abstract PDF

Background

Recent studies have revealed that a small subset of Lynch syndrome-associated colorectal carcinomas (CRCs) is caused by a germline EPCAM deletion-induced MSH2 epimutation. Based on the finding of this genetic alteration, we investigated the implications of EPCAM expression changes in microsatellite instability-high (MSI-H) CRCs.

Methods

Expression of EPCAM and DNA mismatch repair proteins was assessed by immunohistochemistry in 168 MSI-H CRCs. Using DNA samples of these tumors, MLH1 promoter methylation status was also determined by methylation-specific real-time polymerase chain reaction method (MethyLight).

Results

Among 168 MSI-H CRCs, complete loss (CL) and focal loss (FL) of EPCAM expression was observed in two (1.2%) and 22 (13.1%) cases, respectively. Both of the EPCAM-CL cases were found in MSH2-negative tumors without MLH1 promoter methylation. However, only nine of the 22 EPCAM-FL tumors had MSH2 deficiency. Of the 22 EPCAM-FL tumors, 13 showed MLH1 loss, and among them, nine cases were determined to have MLH1 methylation. EPCAM-FL was significantly associated with advanced stage (p=.043), distant metastasis (p=.003), poor differentiation (p=.001), and signet ring cell component (p=.004).

Conclusions

Loss of EPCAM expression is differentially associated with clinicopathological and molecular features, depending on the completeness of the loss, in MSI-H CRCs.

Citations

Citations to this article as recorded by

Prognostic significance of microsatellite instability in colon cancer: Insights from a Propensity Score-Matched Study
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Current Problems in Surgery.2024; 61(12): 101633. CrossRef
Unraveling the multifaceted role of EpCAM in colorectal cancer: an integrated review of its function and interplay with non-coding RNAs
Xingyu Jiang, Sumeng Wang, Qi Liang, Yiqian Liu, Lingxiang Liu
Medical Oncology.2023;[Epub] CrossRef
Outcomes of Definitive Treatment of Signet Ring Cell Carcinoma of the Rectum: Is Minimal Invasive Surgery Detrimental in Signet Ring Rectal Cancers?
S. Raghavan, Deepak Kumar Singh, J. Rohila, A. DeSouza, R. Engineer, A. Ramaswamy, V. Ostwal, A. Saklani
Indian Journal of Surgical Oncology.2020; 11(4): 597. CrossRef
Evaluation of the Role of Circulating Tumor Cells and Microsatellite Instability Status in Predicting Outcome of Advanced CRC Patients
Ippokratis Messaritakis, Maria Sfakianaki, Konstantinos Vogiatzoglou, Asimina Koulouridi, Chara Koutoulaki, Dimitrios Mavroudis, Maria Tzardi, Nikolaos Gouvas, John Tsiaoussis, John Souglakos
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Is Ep-CAM Expression a Diagnostic and Prognostic Biomarker for Colorectal Cancer? A Systematic Meta-Analysis
Susu Han, Shaoqi Zong, Qi Shi, Hongjia Li, Shanshan Liu, Wei Yang, Wen Li, Fenggang Hou
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Prognostic factors in sporadic colon cancer with high-level microsatellite instability
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Subcellular differential expression of Ep-ICD in oral dysplasia and cancer is associated with disease progression and prognosis
Raj Thani Somasundaram, Jatinder Kaur, Iona Leong, Christina MacMillan, Ian J. Witterick, Paul G. Walfish, Ranju Ralhan
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BRAF, PIK3CA, and HER2 Oncogenic Alterations According to KRAS Mutation Status in Advanced Colorectal Cancers with Distant Metastasis
Soo Kyung Nam, Sumi Yun, Jiwon Koh, Yoonjin Kwak, An Na Seo, Kyoung Un Park, Duck-Woo Kim, Sung-Bum Kang, Woo Ho Kim, Hye Seung Lee, Wayne A Phillips
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Twist1-induced epithelial-mesenchymal transition according to microsatellite instability status in colon cancer cells
Bo Young Oh, So-Young Kim, Yeo Song Lee, Hye Kyung Hong, Tae Won Kim, Seok Hyung Kim, Woo Yong Lee, Yong Beom Cho
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Clinicopathologic, molecular, and prognostic implications of the loss of EPCAM expression in colorectal carcinoma
Jung Ho Kim, Jeong Mo Bae, Young Seok Song, Nam-Yun Cho, Hye Seung Lee, Gyeong Hoon Kang
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c-MYC Copy-Number Gain Is an Independent Prognostic Factor in Patients with Colorectal Cancer
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Early Colorectal Epithelial Neoplasm in Korea: A Multicenter Survey of Pathologic Diagnosis: Yun Kyung Kang, So-Young Jin, Mee Soo Chang, Jung Yeon Kim, Gyeong Hoon Kang, Hye Seung Lee, Jin Hee Sohn, Ho Sung Park, Kye Won Kwon, Mi Jin Gu, Young Hee Maeng, Jong Eun Joo, Haeng Ji Kang, Hee Kyung Kim, Kee-Taek Jang, Mi Ja Lee, Hee Kyung Chang, Joon Mee Kim, Hye Seung Han, Won Ae Lee, Yoon Jung Choi, Dong Wook Kang, Sunhoo Park, Jae Hyuk Lee, Mee-Yon Cho; Korean J Pathol. 2013;47(3):245-251. Published online June 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.3.245

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Abstract PDF

Background

The incidence of early colorectal epithelial neoplasm (ECEN) is increasing, and its pathologic diagnosis is important for patient care. We investigated the incidence of ECEN and the current status of its pathologic diagnosis.

Methods

We collected datasheets from 25 institutes in Korea for the incidence of colorectal adenoma with high grade dysplasia (HGD) and low grade dysplasia in years 2005, 2007, and 2009; and early colorectal carcinoma in the year 2009. We also surveyed the diagnostic terminology of ECEN currently used by the participating pathologists.

Results

The average percentage of diagnoses of adenoma HGD was 7.0%, 5.0%, and 3.4% in years 2005, 2007, and 2009, respectively. The range of incidence rates of adenoma HGD across the participating institutes has gradually narrowed over the years 2005 to 2009. The incidence rate of early colorectal carcinoma in the year 2009 was 21.2%. The participants did not share a single criterion or terminology for the diagnosis of adenoma HGD. The majority accepted the diagnostic terms that distinguished noninvasive, mucosal confined, and submucosal invasive carcinoma.

Conclusions

Further research requirements suggested are a diagnostic consensus for the histopathologic diagnosis of ECEN; and standardization of diagnostic terminology critical for determining the disease code.

Citations

Citations to this article as recorded by

Diminutive and Small Colorectal Polyps: The Pathologist's Perspective
Yun Kyung Kang
Clinical Endoscopy.2014; 47(5): 404. CrossRef

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