Journal of Pathology and Translational Medicine

Case Studies

Combined Adenosquamous and Large Cell Neuroendocrine Carcinoma of the Gallbladder: Jiyoon Jung, Yang-Seok Chae, Chul Hwan Kim, Youngseok Lee, Jeong Hyeon Lee, Dong-Sik Kim, Young-Dong Yu, Joo Young Kim; J Pathol Transl Med. 2018;52(2):121-125. Published online October 5, 2017; DOI: https://doi.org/10.4132/jptm.2017.08.20

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Large cell neuroendocrine carcinoma (LCNEC) of the gallbladder is extremely rare and usually combined with other type of malignancy, mostly adenocarcinoma. We report an unusual case of combined adenosquamous carcinoma and LCNEC of the gallbladder in a 54-year-old woman. A radical cholecystectomy specimen revealed a 4.3×4.0 cm polypoid mass in the fundus with infiltration of adjacent liver parenchyma. Microscopically, the tumor consisted of two distinct components. Adenosquamous carcinoma was predominant and abrupt transition from adenocarcinoma to squamous cell carcinoma was observed. LCNEC showed round cells with large, vesicular nuclei, abundant mitotic figures, and occasional pseudorosette formation. The patient received adjuvant chemotherapy. However, multiple liver metastases were identified at 3-month follow-up. Metastatic nodules were composed of LCNEC and squamous cell carcinoma components. Detecting LCNEC component is important in gallbladder cancer, because the tumor may require a different chemotherapy regimen and show early metastasis and poor prognosis.

Citations

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Comparison of Metastatic Patterns Among Neuroendocrine Tumors, Neuroendocrine Carcinomas, and Nonneuroendocrine Carcinomas of Various Primary Organs
Hyung Kyu Park, Ghee Young Kwon
Journal of Korean Medical Science.2023;[Epub] CrossRef
Clinical features and outcomes analysis of Gallbladder neuroendocrine carcinoma
Man Jiang, Yijing Zhang
Journal of Cancer Research and Therapeutics.2023; 19(4): 910. CrossRef
Primary mixed large cell neuroendocrine carcinoma and adenocarcinoma of the gallbladder: A case report and literature review
Tingting Yu, Shike Li, Zhuo Zhang
Asian Journal of Surgery.2022; 45(11): 2336. CrossRef
Mixed neuroendocrine-non-neuroendocrine neoplasm of the gallbladder: case report and literature review
Xu Ren, Hong Jiang, Kan Sun, Xufu Qin, Yongping Qu, Tian Xia, Yan Chen
Diagnostic Pathology.2022;[Epub] CrossRef
Neuroendocrine Neoplasms of the Gallbladder: A Clinicopathological Analysis of 13 Patients and a Review of the Literature
Pengyan Wang, Jingci Chen, Ying Jiang, Congwei Jia, Junyi Pang, Shan Wang, Xiaoyan Chang, Oronzo Brunetti
Gastroenterology Research and Practice.2021; 2021: 1. CrossRef
Gallbladder Mixed Neuroendocrine-Non-neuroendocrine Neoplasm (MiNEN) Arising in Intracholecystic Papillary Neoplasm: Clinicopathologic and Molecular Analysis of a Case and Review of the Literature
Amedeo Sciarra, Edoardo Missiaglia, Mounir Trimech, Emmanuel Melloul, Jean-Philippe Brouland, Christine Sempoux, Stefano La Rosa
Endocrine Pathology.2020; 31(1): 84. CrossRef
Mixed neuroendocrine-non-neuroendocrine carcinoma of gallbladder: case report
Adam Skalický, Lucie Vištejnová, Magdaléna Dubová, Tomáš Malkus, Tomáš Skalický, Ondřej Troup
World Journal of Surgical Oncology.2019;[Epub] CrossRef

Low-Grade Adenosquamous Carcinoma of the Breast with Diverse Expression Patterns of Myoepithelial Cell Markers on Immunohistochemistry: A Case Study: Yoon Jin Cha, Gi Jeong Kim, Byeong-Woo Park, Ja Seung Koo; Korean J Pathol. 2014;48(3):229-233. Published online June 26, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.3.229

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Abstract PDF

This paper reports a case of low-grade adenosquamous carcinoma (LGASC) arising in a 69-year-old woman, who presented with a 1-cm palpable mass on her right breast. Core needle biopsy diagnosed the mass as a fibroadenoma. After six months, the mass increased in size, and the patient received subsequent mammotome excision. On microscopic examination, bland-looking small glands were infiltrating into the fibrotic stroma with lymphocytic infiltrates at the periphery. Hematoxylin and eosin staining revealed relatively easily detectable myoepithelial cells along the outside in each of the glandular structures with variable degrees of squamous metaplasia. Based on histologic features, the patient was diagnosed with LGASC. LGASC is a rare variant of metaplastic carcinoma, which is characterized by a favorable prognosis. Due to the bland cytology and presence of myoepithelial cells, LGASC can be misdiagnosed as benign lesion. Additionally, inconsistent expression of myoepithelial markers could aid the diagnosis of LGASC.

Citations

Citations to this article as recorded by

High rate of PIK3CA mutations but no TP53 mutations in low‐grade adenosquamous carcinoma of the breast
Guillaume Bataillon, Laetitia Fuhrmann, Elodie Girard, Emanuelle Menet, Marick Laé, Mathieu Capovilla, Isabelle Treilleux, Laurent Arnould, Frederique Penault‐Llorca, Roman Rouzier, Caterina Marchiò, Ivan Bieche, Anne Vincent‐Salomon
Histopathology.2018; 73(2): 273. CrossRef
Low-grade Adenosquamous Carcinoma Coexisting with Sclerosing Adenosis of the Breast: A Case Report
Ryoko Oi, Ichiro Maeda, Yoshio Aida, Yukari Yabuki, Toru Nishikawa, Yoshihide Kanemaki, Koichiro Tsugawa, Masayuki Takagi
Journal of St. Marianna University.2017; 8(1): 31. CrossRef
Low-grade Adenosquamous Carcinoma of the Breast
Haruko SAKAMOTO, Akihiko SHIMANA, Hideaki HORI, Kouki TOKUDA, Hitoshi TSUBOUCHI, Miki TAKENAKA, Rin YAMAGUCHI
Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association).2017; 78(9): 1983. CrossRef
Small Glandular Proliferations of the Breast With Absent or Attenuated Myoepithelial Reactivity by Immunohistochemistry: A Review Focusing on the Differential Diagnosis and Interpretative Pitfalls
Paula S. Ginter, Sandra J. Shin, Timothy M. D'Alfonso
Archives of Pathology & Laboratory Medicine.2016; 140(7): 651. CrossRef
Bilateral synchronous low-grade adenosquamous carcinoma of the breast: A Case report with review of the current literature
J.L. Senger, P. Meiers, R. Kanthan
International Journal of Surgery Case Reports.2015; 14: 53. CrossRef
A Nation-Wide Cancer Registry-Based Study of Adenosquamous Carcinoma in Taiwan
Yuan-Tzu Lan, Kuo-Hung Huang, Chien-An Liu, Ling-Chen Tai, Ming-Huang Chen, Yee Chao, Anna Fen-Yau Li, Shih-Hwa Chiou, Yi-Ming Shyr, Chew-Wun Wu, Wen-Liang Fang, Sheng-Nan Lu
PLOS ONE.2015; 10(10): e0139748. CrossRef

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