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Colonic invasive adenocarcinoma with squamoid morules: A case report

Authors :
Akira Ishikawa
Hidenori Tanaka
Ken Yamashita
Koji Arihiro
Shiro Oka
Manabu Shimomura
Hideki Ohdan
Source :
DEN Open, Vol 4, Iss 1, Pp n/a-n/a (2024)
Publication Year :
2024
Publisher :
Wiley, 2024.

Abstract

Abstract Colorectal adenomas with squamoid morules are rare; however, colorectal adenocarcinomas are even rarer. Herein, we present a case of colorectal adenocarcinoma with squamoid morules arising from the transverse colon. A 60‐year‐old Japanese man underwent a colonoscopy, and a Type 0‐Is polyp was detected in the transverse colon. The endoscopic findings suggested a high possibility of carcinoma invasion into the deep submucosa. However, endoscopic mucosal resection was performed due to the patient's preference. Histopathologically, the tumor cells mostly formed atypical glandular structures corresponding to adenocarcinomas. Solid nests were observed in parts of the tumor, composed of round, small to short spindles. Immunohistochemically, p63 was positive in some areas, CK20 was negative, and the Ki‐67 positive cell rate was almost zero, suggesting a squamoid morule. Based on the above findings, colorectal adenocarcinoma with a squamoid morule was diagnosed; only the fifth case was reported worldwide. Squamoid morules should be carefully differentiated from squamous components of adenosquamous carcinomas.

Details

Language :
English
ISSN :
26924609
Volume :
4
Issue :
1
Database :
Directory of Open Access Journals
Journal :
DEN Open
Publication Type :
Academic Journal
Accession number :
edsdoj.491248c4d30f4764be151c5681b34b4f
Document Type :
article
Full Text :
https://doi.org/10.1002/deo2.330