Journal of Pathology and Translational Medicine

Case Studies

Colorectal adenocarcinoma with enteroblastic differentiation: diagnostic challenges of a rare case encountered in clinical practice: Evi Abada, Ifeoma C. Anaya, Othuke Abada, Anthony Lebbos, Rafic Beydoun; J Pathol Transl Med. 2022;56(2):97-102. Published online January 21, 2022; DOI: https://doi.org/10.4132/jptm.2021.10.28

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Colorectal adenocarcinoma with enteroblastic differentiation (CAED) is a rare subtype of colonic adenocarcinoma characterized by increased α-fetoprotein (AFP) production and the expression of at least one enteroblastic marker including AFP, glypican 3 (GPC3), or Spalt like transcription factor 4 (SALL4). We report a case of a 26-year-old female who presented with low back pain and constipation which persisted despite supportive measures. Imaging revealed multiple liver lesions and enlarged retroperitoneal nodes. Tumor markers including AFP were markedly elevated. On biopsy, samples from the liver revealed infiltrating glands lined by columnar-type epithelium with mostly eosinophilic granular to focally clear cytoplasm. By immunohistochemistry, the tumor showed immunoreactivity with AFP, hepatocyte antigen, GPC3, SALL4, CDX2, SATB2, and cytokeratin 20. A colonoscopy performed subsequently revealed a mass in the sigmoid colon and biopsy of this mass revealed a similar histology as that seen in the liver. A diagnosis of CAED was made, following the results of gene expression profiling by the tumor with next-generation sequencing which identified pathogenic variants in MUTYH, TP53, and KDM6A genes and therefore supported its colonic origin. Cases such as this underscores the use of ancillary diagnostic techniques in arriving at the correct diagnosis in lesions with overlapping clinicopathologic characteristics.

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SALL4 in gastrointestinal tract cancers: upstream and downstream regulatory mechanisms
Tairan Wang, Yan Jin, Mengyao Wang, Boya Chen, Jinyu Sun, Jiaying Zhang, Hui Yang, Xinyao Deng, Xingyue Cao, Lidong Wang, Yuanyuan Tang
Molecular Medicine.2024;[Epub] CrossRef
Gastric adenocarcinoma with enteroblastic differentiation in a 67-year-old man in Korea: a case report
Hae Rin Lee, Gwang Ha Kim, Dong Chan Joo, Moon Won Lee, Bong Eun Lee, Kyung Bin Kim
The Ewha Medical Journal.2024;[Epub] CrossRef
Colorectal adenocarcinoma with clear cell changes: immunohistological and molecular findings in three cases
Andreas Gocht, Carsten Heidel, Jutta Kirfel, Rita Vesce, Pamela Lazar-Karsten, Helen Pasternack, Madelaine Melzer, Phillip Hildebrand, Nicole Warkentin, Hendrik Schimmelpenning, Verena-Wilbeth Sailer
Virchows Archiv.2024; 485(3): 569. CrossRef
Ureteral Metastasis of Colonic Adenocarcinoma with Enteroblastic Differentiation: A Rare Case to be Distinguished from Clear Cell Adenocarcinoma of the Urinary Tract
Hiroshi Minato, Akane Yoshikawa, Sho Tsuyama, Kazuyoshi Katayanagi, Kengo Hayashi, Yusuke Sakimura, Hiroyuki Bando, Tomohiro Hori, Yosuke Kito
International Journal of Surgical Pathology.2023; 31(8): 1553. CrossRef
Beyond liver cancer, more application scenarios for alpha-fetoprotein in clinical practice
Chenyu Ma, Yuexinzi Jin, Yuhan Wang, Huaguo Xu, Jiexin Zhang
Frontiers in Oncology.2023;[Epub] CrossRef
AIEgens assisted label free DNA supersandwich immunoassay for ultrasensitive α-fetoprotein detection
Xiaowen Ou, Jingman Dai, Yiting Huang, Xiaoqin Xiong, Zhi Zheng, Xiaoding Lou, Fan Xia
Giant.2022; 11: 100110. CrossRef
Rectal carcinoma with dual differentiation toward enteroblastic and neuroendocrine features arising in a patient with ulcerative colitis: a case report
Takako Kihara, Ryuichi Kuwahara, Kurando Kusunoki, Tomohiro Minagawa, Yuki Horio, Motoi Uchino, Hiroki Ikeuchi, Seiichi Hirota
World Journal of Surgical Oncology.2022;[Epub] CrossRef

Fallopian Metaplastic Papillary Tumour: An Atypical Transdifferentiation of the Tubal Epithelium?: Miguel Fdo. Salazar, Isaías Estrada Moscoso, Lorena Troncoso Vázquez, Nubia Leticia López García, Paola Andrea Escalante Abril; J Pathol Transl Med. 2015;49(2):148-155. Published online March 12, 2015; DOI: https://doi.org/10.4132/jptm.2014.10.15

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Abstract PDF

A metaplastic papillary tumor of the Fallopian tube is an extremely uncommon condition, with odd and confusing features that make it difficult to categorize as benign or borderline. Here, we summarize all the published cases to date and document the case of a 41-year-old woman diagnosed with this alteration after her last childbirth and ensuing tubal ligation. One of the tubes was bulky and filled with a caramel-like substance encircling a blurry spot. Light microscopy detailed a slender stalk covered by eosinophilic, columnar plump cells, showing atypical nuclei and focal budding. Mitotic figures were absent. The immunohistochemistry panel was positive for pan-cytokeratin, epithelial membrane antigen, cyclin D1, and hormone receptors. Additionally, a proliferation index of less than 5% was rated using Ki-67. The true nature of this tumor (reactive vs neoplastic) is uncertain. Nonetheless, its association with pregnancy suggests an adaptive change, likely similar to the atypical transdifferentiation proposed for Arias-Stella reaction.

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Ungewöhnliche Proliferation des Eileiters
Angelina Vlaški, Vanessa Neukunft, Andrea Maria Gassel, Frederick Klauschen, Doris Mayr
Die Pathologie.2025; 46(1): 56. CrossRef
Fallopian tube papilloma
Shashank Mishra, Prerna Guleria
Indian Journal of Pathology and Microbiology.2021; 64(3): 608. CrossRef
Metaplastic papillary tumour of the fallopian tube, a rare entity, analysed by next‐generation sequencing
Sandra Sunitsch, Julia Reisinger, Luca Abete, Karl Kashofer, Peter Regitnig
Histopathology.2020; 76(6): 923. CrossRef

Oncocytic Lipoadenoma: A Rare Case of Parotid Gland Tumor and Review of the Literature: Chen-lin Chi, Tseng-tong Kuo, Li-yu Lee; J Pathol Transl Med. 2015;49(2):144-147. Published online March 12, 2015; DOI: https://doi.org/10.4132/jptm.2014.02.10

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Abstract PDF

Oncocytic lipoadenoma is a rare tumor, with only 18 cases having been reported since the first in 1998. We encountered a case of oncocytic lipoadenoma presenting as a slowly growing parotid mass in a 71-year-old man. This tumor is characteristically comprised of a mixture of oncocytes and adipocytes. The present case is one of five reported cases of oncocytic lipoadenoma showing sebaceous differentiation. The results of immunohistochemical study with DOG1 antibody supported the origination of this tumor in the striated duct.

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Oncocytic lipoadenoma of the parotid gland: a case report and a review of the literature
Jood K Alotaibi, Turki Mohammed Almuhaimid, Ghada Abdallah Moumneh
Journal of Surgical Case Reports.2024;[Epub] CrossRef
Oncocytic sialolipoma of parotid gland: Case report and literature review
VenuPatel Sureja, KoyyeRavindranath Tagore
Indian Journal of Pathology and Microbiology.2023; 66(3): 591. CrossRef
Complex Component of Oncocytic and Non-Oncocytic Lipoadenomas in the Parotid Gland: A Case Report
Fuyuki Sato, Takashi Nakajima, Takashi Sugino
Diagnostics.2021; 11(8): 1478. CrossRef
Oncocyitic lipoadenoma of the parotid gland
Renato PIANTANIDA, Alberto CARANTI, Adele CHIESA, Jessica BARIZZI, Ulrike PERRIARD, Filippo BARUCCA, Antonio PELLANDA
Otorinolaringologia.2021;[Epub] CrossRef
A case of oncocytic lipoadenoma of the submandibular gland and its diagnostic cytology challenges
Khaled A. Murshed, Ammar Khalafalla, Belal Alani, Hanan Farghaly, Moustafa Alkhalil
Diagnostic Cytopathology.2020; 48(4): 364. CrossRef
An extremely rare case of giant oncocytic adenolipoma of the parotid gland
Dipesh Shakya, Ajit Nepal
Clinical Case Reports.2020; 8(12): 2390. CrossRef
A rare cause of primary hyperparathyroidism: Parathyroid lipoadenoma
Sabri Özden, Servet Güreşci, Barış Saylam, Gül Dağlar
Auris Nasus Larynx.2018; 45(6): 1245. CrossRef
Oncocytic osteolipoadenoma of the submandibular gland
Domenico Corradi, Rodolfo Monaco, Giulia D'Angelo, Paola Bini, Teore Ferri, Enrico M Silini
Histopathology.2016; 69(1): 148. CrossRef

Development of Six Tumors in a Sebaceus Nevus of Jadassohn: Report of a Case: Serap Gozel, Melahat Donmez, Noyan Can Akdur, Hulya Yikilkan; Korean J Pathol. 2013;47(6):569-574. Published online December 24, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.6.569

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Abstract PDF

Nevus sebaceus of Jadassohn is a congenital cutaneous hamartoma comprised of multiple skin structures. It has the potential to develop into variety of neoplasms of various epidermal adnexal origins. While multiple tumors may occasionally arise, it is unusual for more than four tumors to arise simultaneously within a single sebaceus nevus. Here in, we report a case of a 70-year-old woman with six neoplastic proliferations including a syringocystadenoma papilliferum, pigmented trichoblastoma, tubular apocrine adenoma, sebaceoma, tumors of follicular infundibulum and superficial epithelioma with sebaceus differentiation arising in a long standing nevus sebaceus on the scalp. Our case is extraordinary because a single nevus sebaceus contained six neoplastic proliferations with differentiation toward the folliculosebaceous-apocrine unit.

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Melanotrichoblastoma Arising on Nevus Sebaceous: A Rare Occurence
Apaopa J. Thekho, Deepika Uikey, Shanta Passi, V. Ramesh
Indian Journal of Dermatology.2025; 70(2): 105. CrossRef
Co-occurrence of Tubular Apocrine Adenoma and Syringocystadenoma Papilliferum over the Hypogastrium: A Rare Case Report
R Raghunatha Reddy, Mukunda Ranga Swaroop, Yogesh Devaraj, Greeshma Jagadish, Namratha Govindaraju
Clinical Dermatology Review.2025; 9(1): 69. CrossRef
Tumor of follicular infundibulum – reappraisal in a series of 28 patients with critical review of the literature
Michael Wilk, Bettina G. Zelger, Bernhard Zelger
JDDG: Journal der Deutschen Dermatologischen Gesellschaft.2024; 22(2): 223. CrossRef
Tumor des follikulären Infundibulums – Neubewertung in einer Serie von 28 Patienten mit kritischer Analyse der Literatur
Michael Wilk, Bettina G. Zelger, Bernhard Zelger
JDDG: Journal der Deutschen Dermatologischen Gesellschaft.2024; 22(2): 223. CrossRef
Adnexal neoplasms of the eye
Roman Drozdowski, Jane M. Grant-Kels, Madina Falcone, Campbell L. Stewart
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Melanotrichoblastoma: sixth case report in the literature
Juliana Polizel Ocanha-Xavier, José Cândido Caldeira Xavier-Júnior
Anais Brasileiros de Dermatologia.2023; 98(6): 871. CrossRef
Multiple secondary neoplasms in nevus sebaceus excision
Travis S. Dowdle, David A. Mehegran, Dylan Maldonado, Cort D. McCaughey
Baylor University Medical Center Proceedings.2022; 35(2): 241. CrossRef
Congenital tumors arising from nevus sebaceous in 2 neonates
Lynette Wei Yi Wee, Bori Born, Sharon Mun Yee Wong, Hui-Ling Chia, Sithach Mey, Suresh Chandran, Mark Jean Aan Koh
JAAD Case Reports.2022; 21: 70. CrossRef
Development of seven secondary neoplasms in a nevus sebaceous: a case report and literature review
Yi-Wen Kuo, Jung-Chia Lin, Wei-Hsuan Tsai
Archives of Craniofacial Surgery.2022; 23(2): 83. CrossRef
Multiple rare neoplasms arising from the nevus sebaceous of the scalp: A case report
Deepthi Shetty, Anilkumar Desai, Niranjan Kumar, Dinesh U.S., Aditya Agnihotri, Saurav Bhaduri
Gulhane Medical Journal.2022; 64(2): 197. CrossRef
Syringocystadenoma Papilliferum and Basal Cell Carcinoma Arising in Nevus Sebaceous
Jingjing Jiang, Yujuan Chen, Qi He, Jiao Yang, Zhengzhong Zhang, Hao Yang, Huan Zhang, Chuan Yang
Clinical, Cosmetic and Investigational Dermatology.2022; Volume 15: 2021. CrossRef
Eyelid trichoblastoma – A case series
Gunja Chowdhury, Meghana Tanwar, Usha Kim, Shanthi R. Krishnan
Journal of Clinical Ophthalmology and Research.2021; 9(3): 123. CrossRef
Trilogy Revisited
Anand Bardia, Debajyoti Chatterjee, Keshavamurthy Vinay
Indian Dermatology Online Journal.2021; 12(4): 577. CrossRef
Trichilemmoma coexisting with sebaceous nevus
AngooriG Rao, VangaliS Reddy, M Tejal, M Divya
Indian Dermatology Online Journal.2020; 11(2): 253. CrossRef
Syndromic sebaceous nevus: current findings
Oumama El Ezzi, Anthony S. de Buys Roessingh, Michèle Bigorre, Guillaume Captier
International Journal of Dermatology.2018; 57(5): 599. CrossRef
Syringocystadenoma papilliferum and trichoblastoma arising in the nevus sebaceous
Feifei Wang, Yatong Wu, Zhancai Zheng, Yanping Bai
Indian Journal of Pathology and Microbiology.2018; 61(1): 106. CrossRef
Dermoscopic Analysis of Nevus Sebaceus of Jadassohn: A Study of 13 Cases
Awatef Kelati, Hanane Baybay, Salim Gallouj, Fatima Zahra Mernissi
Skin Appendage Disorders.2017; 3(2): 83. CrossRef
Secondary neoplasms arising from nevus sebaceus: A retrospective study of 450 cases in Taiwan
Ming‐Chun Hsu, Jau‐Yu Liau, Jin‐Liern Hong, Yin Cheng, Yi‐Hua Liao, Jau‐Shiuh Chen, Yi‐Shuan Sheen, Jin‐Bon Hong
The Journal of Dermatology.2016; 43(2): 175. CrossRef
A Histological Snapshot of Hypothetical Multistep Progression From Nevus Sebaceus to Invasive Syringocystadenocarcinoma Papilliferum
Vishwas Parekh, Cesar E. Guerrero, Charles F. Knapp, Craig A. Elmets, Kristopher M. McKay
The American Journal of Dermatopathology.2016; 38(1): 56. CrossRef
Trichoblastoma, syringocystadenoma papilliferum, desmoplastic trichilemmoma and tumor of the follicular infundibulum with signet‐ring cells, all arising in nevus sebaceus
Emilie Dore, Megan H. Noe, Brian L. Swick
Journal of Cutaneous Pathology.2015; 42(9): 645. CrossRef
Ceruminous adenoma (ceruminoma) arising in a nevus sebaceus of Jadassohn within the external auditory canal of a 3 year-old boy – A case report
Elżbieta Niemczyk, Kazimierz Niemczyk, Jadwiga Małdyk, Lidia Zawadzka-Głos
International Journal of Pediatric Otorhinolaryngology.2015; 79(11): 1932. CrossRef
Fehlbildungen und Nävi des behaarten Kopfes
V. Behle, H. Hamm
Der Hautarzt.2014; 65(12): 1022. CrossRef

Myxoid Liposarcoma with Cartilaginous Differentiation: A Case Study with Cytogenetical Analysis: Hyunchul Kim, Won Hwangbo, Sangjeong Ahn, Suhjin Kim, Insun Kim, Chul Hwan Kim; Korean J Pathol. 2013;47(3):284-288. Published online June 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.3.284

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Abstract PDF

Myxoid liposarcoma is a subtype of liposarcoma. This specific subtype can be identified based on its characteristic histological and cytogenetical features. The tumor has a fusion transcript of the CHOP and TLS genes, which is caused by t(12;16)(q13;p11). Most of the fusion transcripts that have been identified fall into three categories, specifically type I (exons 7-2), type II (exons 5-2), and type III (exons 8-2). A total of seven myxoid liposarcomas associated with the rare phenomenon of cartilaginous differentiation have been documented in the literature. Currently, only one of these cases has been cytogenetically analyzed, and the analysis indicated that it was a type II TLS-CHOP fusion transcript in both the typical myxoid liposarcoma and cartilaginous areas. This study presents a second report of myxoid liposarcoma with cartilaginous differentiation, and includes a cytogenetical analysis of both the myxoid and cartilaginous areas.

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Myxoid liposarcoma with nuclear pleomorphism: a clinicopathological and molecular study
Naoki Kojima, Takashi Kubo, Taisuke Mori, Kaishi Satomi, Yuko Matsushita, Shintaro Iwata, Yasushi Yatabe, Koichi Ichimura, Akira Kawai, Hitoshi Ichikawa, Akihiko Yoshida
Virchows Archiv.2024; 484(1): 71. CrossRef
The Conundrum of Dedifferentiation in a Liposarcoma at a Peculiar Location: A Case Report and Literature Review
Ana-Maria Ciongariu, Adrian-Vasile Dumitru, Cătălin Cîrstoiu, Bogdan Crețu, Maria Sajin, Dana-Antonia Țăpoi, Aminia-Diana Ciobănoiu, Adrian Bejenariu, Andrei Marin, Mariana Costache
Medicina.2023; 59(5): 967. CrossRef
Myxoid liposarcoma with cartilaginous differentiation showing DDIT3 rearrangement
Kayo Suzuki, Taketoshi Yasuda, Kenta Watanabe, Takeshi Hori, Masahiko Kanamori, Tomoatsu Kimura
Oncology Letters.2017;[Epub] CrossRef

Case Reports

Gastric Adenocarcinoma of Fundic Gland Type: Report of Three Cases: Eun Su Park, Young Eun Kim, Cheol Keun Park, Takashi Yao, Ryoji Kushima, Kyoung-Mee Kim; Korean J Pathol. 2012;46(3):287-291. Published online June 22, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.3.287

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Abstract PDF

Recently, fundic gland type gastric adenocarcinoma (GA-FG) has been reported as a new entity. This report describes GA-FG among Koreans for the first time. From March 2008 to July 2010 we identified only three cases of GA-FG out of over 6,000 GAs resected by endoscopy or surgery. Cell differentiation by mucin proteins, pepsinogen-I, and H+/K+-ATPase was evaluated. All three cases were male patients and diagnosed as early stage GA. Histologically, GA-FGs were well-differentiated adenocarcinoma with pale gray-blue, basophilic columnar or cuboidal cells and mildly enlarged nuclei, resembling chief cells. All three cases were positive for pepsinogen-I and were classified as gastric mucin phenotype. Among three histologic subtypes of GA-FG, since tumors were mainly composed of chief cells, our three cases were classified as chief cell predominant type. In conclusion, GA-FG is very rare among Koreans and pepsinogen-I and MUC6 expression are typical immunohistochemical findings in GA-FG suggesting differentiation toward fundic glands.

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Oxyntic Gland Neoplasms - From Adenoma to Advanced Gastric Cancer: A Review of 29 Cases
Gi Hwan Kim, Jun Su Lee, Jeong Hoon Lee, Young Soo Park
Journal of Gastric Cancer.2024; 24(4): 378. CrossRef
Transcriptome analysis reveals the essential role of NK2 homeobox 1/thyroid transcription factor 1 (NKX2-1/TTF-1) in gastric adenocarcinoma of fundic-gland type
Kazushi Fukagawa, Yu Takahashi, Nobutake Yamamichi, Natsuko Kageyama-Yahara, Yoshiki Sakaguchi, Miho Obata, Rina Cho, Nobuyuki Sakuma, Sayaka Nagao, Yuko Miura, Naoki Tamura, Daisuke Ohki, Hiroya Mizutani, Seiichi Yakabi, Chihiro Minatsuki, Keiko Niimi, Y
Gastric Cancer.2023; 26(1): 44. CrossRef
Clinicopathological Features and the Prevalence of Oxyntic Gland Neoplasm: A Single-center Retrospective Study
Hikari Asahara, Toshitatsu Takao, Yumiko Asahara, Masakyo Asahara, Douglas Motomura, Hiroya Sakaguchi, Tetsuya Yoshizaki, Nobuaki Ikezawa, Madoka Takao, Yoshinori Morita, Takashi Toyonaga, Masato Komatsu, Ryoji Kushima, Yuzo Kodama
Internal Medicine.2023; 62(19): 2763. CrossRef
Clinicopathological features of gastric adenocarcinoma of fundic gland type
Bao-Zhen Guo, Zhen-Zhen Liu, Gao-Fei Shen, Fei Zhu, Hui-Fen Lian, Xin Li, Jun-Yi Zheng, Jin-Peng Li, Shui-Miao Deng, Rui Huang
World Chinese Journal of Digestology.2023; 31(6): 244. CrossRef
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Hwa Jin Lee, Gwang Ha Kim, Dong Chan Joo, Moon Won Lee, Bong Eun Lee, Kyungbin Kim
The Korean Journal of Gastroenterology.2023; 81(6): 259. CrossRef
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Zhiyong Zhai, Wei Hu, Zhaoyu Huang, Zemin Chen, Sicun Lu, Wei Gong
JGH Open.2023; 7(12): 812. CrossRef
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Huan Zhang, Shuyan Wang, Yongping Zhang, Fusang Ye, Chunnian Wang
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Gastric Adenocarcinoma of Fundic Gland Type Treated by Endoscopic Submucosal Dissection
Yong Bo Park, Gwang Ha Kim, Kyungbin Kim, Tae Kyoung Ha, Guk Bin Park, Young Min Kwak
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2021; 21(1): 82. CrossRef
Gastric epithelial neoplasm of fundic-gland mucosa lineage: proposal for a new classification in association with gastric adenocarcinoma of fundic-gland type
Hiroya Ueyama, Takashi Yao, Yoichi Akazawa, Takuo Hayashi, Koichi Kurahara, Yumi Oshiro, Masayoshi Yamada, Ichiro Oda, Shin Fujioka, Chiaki Kusumoto, Masayoshi Fukuda, Kunihisa Uchita, Tomohiro Kadota, Yasuhiro Oono, Kazuhisa Okamoto, Kazunari Murakami, Y
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Endoscopic resection is a suitable initial treatment strategy for oxyntic gland adenoma or gastric adenocarcinoma of the fundic gland type
Masaya Iwamuro, Chiaki Kusumoto, Masahiro Nakagawa, Sayo Kobayashi, Masao Yoshioka, Tomoki Inaba, Tatsuya Toyokawa, Shinichiro Hori, Shouichi Tanaka, Kazuhiro Matsueda, Takehiro Tanaka, Hiroyuki Okada
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Ou Chen, Ze-Yong Shao, Xiong Qiu, Guang-Ping Zhang
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Mark A Benedict, Gregory Y Lauwers, Dhanpat Jain
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In Ji Song, Jin Woo Joo, Jun Chul Park, Sung Kwan Shin, Yong Chan Lee, Sang Kil Lee
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2017; 17(2): 94. CrossRef
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Karen Chan, Ian S Brown, Trevor Kyle, Gregory Y Lauwers, Marian Priyanthi Kumarasinghe
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Twelve-year natural history of a gastric adenocarcinoma of fundic gland type
Yoshinori Sato, Takashi Fujino, Akira Kasagawa, Ryo Morita, Shun-ichiro Ozawa, Yasumasa Matsuo, Tadateru Maehata, Hiroshi Yasuda, Masayuki Takagi, Fumio Itoh
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Clinicopathological features of gastric adenocarcinoma of the fundic gland (chief cell predominant type) by retrospective and prospective analyses of endoscopic findings
Takashi Chiba, Katsuaki Kato, Takayuki Masuda, Shuichi Ohara, Noriyuki Iwama, Takenobu Shimada, Daisuke Shibuya
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Eleanor Lewin, Philip Daroca, Sanjay Sikka, Tong Wu, Yukihiro Nakanishi
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Gastric adenocarcinoma of the fundic gland (chief cell-predominant type): A review of endoscopic and clinicopathological features
Masaki Miyazawa, Mitsuru Matsuda, Masaaki Yano, Yasumasa Hara, Fumitaka Arihara, Yosuke Horita, Koichiro Matsuda, Akito Sakai, Yatsugi Noda
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Tae-In Lee
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Oxyntic gland polyp/adenoma
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Dedifferentiated Extraskeletal Myxoid Chondrosarcoma of the Masticator Space: A Case Report.: Geunyoung Jung, Kyung Ja Cho, Seung Ho Choi, Mi Jung Kim; Korean J Pathol. 2011;45:S101-S105.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S101

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Abstract PDF

We describe a 69-year-old woman who presented with a dedifferentiated extraskeletal myxoid chondrosarcoma arising in the left masticator space. Computed tomography and magnetic resonance imaging revealed a 5 cm sized mass in the left masticator space. Histologically, the tumor consisted of two distinct areas. The less cellular area was a low-grade extraskeletal myxoid chondrosarcoma, composed of strands or cords of uniform spindle cells and abundant myxoid stroma. The more cellular, dedifferentiated area corresponded to a high grade myxofibrosarcoma, consisting of anaplastic tumor cells in myxoid stroma and geographic necrosis. The tumor cells of the former area were positive for S-100 protein, microtubule-associated protein-2 (MAP-2) and class III beta-tubulin, but negative for cytokeratin, smooth muscle actin, and desmin. The tumor cells in the latter, pleomorphic area showed MAP-2 and beta-tubulin immunoreactivity with a high Ki-67 labeling index. Based on its histologic and immunohistochemical features, the tumor was considered a dedifferentiated extraskeletal myxoid chondrosarcoma.

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Extraskeletal myxoid chondrosarcoma of the parotid gland
NyimiBushabu Fidele, Wu Tianfu, Bing Liu, Yanfang Sun, Zhao Yifang
Annals of Maxillofacial Surgery.2019; 9(2): 439. CrossRef
Myxoid chondrosarcoma of maxilla: A rare case report
Hiralal Ash, Ajoy Kumar Shahi, Kabita Chatterjee, Dipankar Samaddar
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology.2016; 28(3): 273. CrossRef
Maxillo-facial Extraskeletal Myxoid Chondrosarcoma: A Case Report and Discussion
Ratnadeep Ganguly, Abhishek Mukherjee
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Original Articles

Diagnostic Utility of the JAZF1/JJAZ1 Gene Fusion in Endometrial Stromal Sarcomas and Their Histologic Variants.: Sang Ryung Lee, Joon Seon Song, Ga Hye Kim, Jene Choi, Hyung Kyoung Kim, Yonghee Lee, Kyu Rae Kim; Korean J Pathol. 2011;45(5):498-505.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.5.498

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Abstract PDF: BACKGROUND
The diagnosis of endometrial stromal sarcoma (ESS) is often difficult in cases showing diverse histological differentiation or in undifferentiated endometrial sarcoma (UES). Recently, JAZF1/JJAZ1 gene fusion has been described as a defining feature of low-grade ESS (LGESS). However, its prevalence is variably reported, and the diagnostic utility has rarely been examined for cases showing various histological differentiation.
METHODS
To test the diagnostic utility of JAZF1/JJAZ1 gene fusion in difficult cases, we compared the prevalence of the JAZF1/JJAZ1 fusion gene in LGESS with and without histological differentiation.
RESULTS
The JAZF1/JJAZ1 fusion transcript was detected in 18 of 21 LGESS (85.7%), including 14 classical LGESS (93%), four LGESS with diverse histological differentiation (67%), and two with UES (28.6%). Positive cases included two LGESS with sex cord-like differentiation, one with osseous differentiation, and two UES. LGESS showing smooth muscle differentiation revealed the fusion transcript only in the classic area. Direct sequencing analysis of two LGESS revealed a previously reported breakpoint at t(7;17)(p15;q21).
CONCLUSIONS
The JAZF1/JJAZ1 fusion gene was identified in a significant proportion of LGESS showing secondary histological differentiation except in cases with smooth muscle differentiation. Thus, this fusion gene may be useful to confirm the diagnosis in difficult cases of LGESS.

Growth Differentiation Factor 5 (GDF5) Core Promoter Polymorphism Is Not Associated with Susceptibility to Osteoarthritis of the Knee in the Korean Population.: Zhang Cao, Hwa Sung Lee, Jae Hwi Song, Jeong Whan Yoon, Yong Kyu Park, Suk Woo Nam, Jung Young Lee, Won Sang Park; Korean J Pathol. 2010;44(4):404-409.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.4.404

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Abstract PDF

BACKGROUND
Osteoarthritis (OA) is a common disease characterized by degenerating joint cartilage in the knee, hip, and hand. A functional single nucleotide polymorphism (SNP) +104T/C; rs143383 in the 5' untranslated region of the growth differentiation factor 5 (GDF5) gene was recently associated with susceptibility to OA in the Japanese and Chinese populations.
METHODS
To investigate whether this association is present in the Korean population, the frequency of the polymorphism was investigated in 276 patients with knee OA and 298 healthy subjects as controls. Polymorphism analysis was performed by amplifying the core promoter region of the GDF5 gene and digesting it with the BsiEI restriction enzyme.
RESULTS
The frequency of the TT, CT, and CC genotypes was 54.3% (150/276), 41.7% (115/276), and 4.0% (11/276), respectively, in patients with OA, and 53.4% (159/298), 37.9% (113/298), and 8.7% (26/298), respectively, in healthy controls. No significant differences in genotypic or allelic frequencies of the +104T/C SNP of the GDF5 gene were observed between patients with OA and controls. Also, no significant differences in allelic and genotypic frequencies were found when the individuals were stratified by age and gender.
CONCLUSIONS
The results suggest that the +104T/C; rs143383 GDF5 core promoter polymorphism is not a risk factor for OA in the Korean population.

Citations

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Case Reports

Intra-abdominal Desmoplastic Small Round Cell Tumor Diagnosed by Lymph Node Biopsy: A case report.: Myung Jin Ju, Kwang Min Lee, Hye Kyung Lee, Dong Kyu Chung; Korean J Pathol. 1995;29(5):698-701.

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Abstract: Intra-abdominal desmoplastic small round cell tumor has been described in the literature since 1989. It is characterized by the occurrence in ages less than 40 with male predominance, an intra-abdominal location, and small round to oval shaped tumor cells with divergent differentiation in the background of the desmoplastic stroma. We recently experienced this tumor in an inguinal lymph node of a 36-year-old man. It is suspected that it metastasized from a lower intra-abdominal tumor. Immunohistochemical stains for keratin, epithelial membrane antigen, vimentin, S-100 protein and neuron specific enolase were positive. This is the first documented case in Korea. Herein, we report on this tumor with a review of literature.

Intraabdominal Desmoplastic Small Cell Tumors with Divergent Differentiation: Report of two cases with immunohistochemical and ultrastructural studies.: Young Ha Oh, Nam Hoon Kim, Joo Seob Keum, Moon Hyang Park; Korean J Pathol. 1996;30(1):40-49.

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Abstract PDF: We studied two intraabdominal desmoplastic small cell tumors. The patients were two men, 37 and 23 years old, with jaundice and palpable abdominal masses. On exploratory laparotomy, each patient revealed a huge mass in the greater omentum with disseminated peritoneal seeding, measuring 32 cm and 11 cm in its greatest dimension, respectively. The tumor involved the diaphragm, rectal shelf, and cul de sac in case 1, and it involved the porta hepatis, retroperitoneum, and serosal surface of the ascending and transverse colon in case 2. Omentectomy of the huge mass and satellite masses was performed in each patient. Both tumors showed nearly the same histopathologic features. The histologic pattern was suggestive of a metastatic small cell carcinoma, but there was no specific, single primary site. The tumors consisted of variably sized, discrete islands of epithelial-like small cells in dense desmoplastic stroma. The tumor cells revealed divergent epithelial, mesenchymal, and neural differentiation by histologic, immunohistochemical, and electron microscopic observations. Only one cycle of chemotherapy including cisplatin and VP-16 was given in case 1 because of a subsequent hepatic problem, who, thereafter, showed massive intraabdominal recurrent tumors 6 months after diagnosis. In case 2, the poor condition of the patient had made chemotherapy and radiotherapy impossible. Case 2 died of disseminated intravascular coagulation following progressive cachexia 7 months after diagnosis.

Original Article

Immunohistochemical and Ultrastructural Study of Fibroblast Differentiation.: Chae Hong Suh; Korean J Pathol. 1996;30(2):106-114.

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Abstract PDF: The histogenesis of the myofibroblast continues to be a controversial issue. The most popular view is that the myofibroblast is derived directly from the fibroblast. The important role of myofibroblasts in the synthesis of collagen and in wound contraction was demonstrated initially in granulation tissue in experimental animals. Four settings are recognized in which myofibroblasts are the principal proliferative cells: reparative responses, pseudoneoplastic disorders, stromal response to neoplasia, and true neoplasms, both benign and malignant. To identify of fibroblastic cells with smooth muscle differentiation features in the nonneoplastic and neoplastic lesions, we examined a variety of histological, immunohistochemical and ultrastructural features of 7 cases of granulation tissue, 7 of hypertrophic scar, 10 of chronic persistent hepatitis, 10 of chronic active hepatitis, 7 of liver cirrhosis, 7 of fibromatosis, 42 of cervical intraepithelial neoplasia, 14 of microinvasive carcinoma, 14 of invasive carcinoma, 7 of fibroma, 20 of fibrosarcoma and 72 of malignant fibrous histiocytoma. Antibodies against alpha-smooth muscle actin and desmin were used in a biotin-streptavidin procedures. The results of immunohistochemical and electron microscopical examinations yielded virtually identical findings. The identification of fibroblastic cells with smooth muscle cell differentiation features in the desmoplastic reactions of carcinomas, fibroma, fibrosarcoma and malignant fibrous histiocytoma offers also novel diagnostic and prognostic perspectives, that might help in evaluating preneoplastic lesions and malignant lesions. So degree of proliferative myofibroblasts was helpful diagnostic aid in differentiation of chronic persistent hepatitis, chronic active hepatitis and liver cirrhosis.

Case Reports

Invasive Extramammary Paget Disease: A Report of 2 Cases with Immunohistochemical and Ultrastructural Findings.: Kyu Rae Kim, Chong Woo You, Jeong Ho Han, Young Hyeh Ko; Korean J Pathol. 1996;30(9):858-864.

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Abstract PDF: We present 2 cases of invasive extramammary Paget disease occuring in the vulva area of a 60 year old female, and in the scrotal and penile area of a 63 year old male patient. The histologically typical Paget cells were not only seen in the surface epithelium but were also involved in the outer root sheath of the hair follicles. Stromal infiltration of tumor cells into the upper dermis were present in both cases, however, no underlying primary sweat gland carcinoma was present. Metastatic foci of inguinal lymph nodes showed apocrine-type epithelium with abundant eosinophilic granular cytoplasm, which were positive for anti-CEA and GCDFP-15, as well as eccrine-type epithelium containing mucinous secretory materials in the lumen and the cytoplasm. Ultrastructural findings showed interdigitating plasma membranes with prominent desmosomes between the Paget cells, intracytoplasmic tonofibrils, intracellular tubules, lipid vacuoles, and enlarged mitochondria. Histological, immunohistochemical, and ultrastructural findings suggested that Paget cells showed both eccrine and apocrine differentiation.

Choriocarcinoma of the Colon.: Youn Mee Kim, Mee Youn Cho, Soon Won Hong, Soon Hee Jung; Korean J Pathol. 1997;31(8):794-797.

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Abstract PDF: Choriocarcinoma of the gastrointestinal tract is rare. Among them, that of the stomach is the most common. Six cases of choriocarcinoma of the colon were found in the review of the literature. All of these previously reported cases had multiple metastatic foci in the liver, lung, lymph nodes and the prognosis seemed to be very poor. Therefore we think that choriocarcinoma of the colon should be distinguished from conventional adenocarcinoma. A 66-year old female patient, described in this case, was operated on under the impression she was suffering from acute appendicitis. The resected ascending colon revealed extensive hemorrhagic necrosis and perforation with fibrous adhesion in the cecum. On the cut section, the mural tumorous thickening was not definite. Histologically, the tumor showed a focus of typical adenocarcinoma arising from glandular epithelial cells, which were transformed into highly anaplastic tumor cells. There were frequent vascular invasions of tumor cells, similar to syncytiotrophoblasts. In the immunohistochemical stains, both glandular and highly anaplastic tumor cells reacted with cytokeratin. The glandular cells were also reactive for carcinoembryonic antigen (CEA) and anaplastic tumor cells for human chorionic gonadotrophin (hCG). This is the first report of choriocarcinoma of the colon in Korea. We describe this case with a review of the literature.

Original Article

Expression of Proliferating Cell Nuclear Antigen and p53 Protein in Ovarian Epithelial Tumors.: Jong Jae Jung, Jong Hee Nahm, Chang Soo Park; Korean J Pathol. 1998;32(3):193-200.

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Abstract PDF: p53 gene mutation is commonly accepted to be associated with loss of negative cell cycle control and progression of tumors. The proliferative activity of tumor cells is considered to be a valuable indicator of tumor aggressiveness. This study is intended to compare p53 protein expression with cell proliferation rates in the ovarian epithelial tumors according to the various clinicopathological parameters. Immunohistochemistry using monoclonal p53 antibody (DO-1) and PCNA antibody (PC10) was applied to 56 cases of ovarian epithelial tumors including 17 cases of borderline tumor. The results were as follows. Both immunohistochemical staining of PCNA and p53 protein showed positive reactions confined to the nuclei of tumor cells. There were significant differences of p53 protein expression rates between borderline malignancies (11.8%) and cystadenocarcinomas (56.4%) of ovary. The expression rate of p53 protein was not significantly different according to the differentiation and the stage, but the cases of strong positive reaction to p53 protein were more frequently noted in the poorly differentiated and advanced staged tumors. The PCNA indices of p53 strong positive cases were higher than those of p53 weak positive cases. In summary, p53 protein and PCNA expression may be used as an adjuvant in differentiating borderline lesions from carcinomas of ovary and predicting their biological behaviors.

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