Adenocarcinoma originating from a colonic duplication cyst: A case report  

作　　者：Jeehye Lee Jung Wook Suh 

机构地区：[1]Department of Surgery,Yongin Severance Hospital,Yongin 16995,Gyeonggi-do,South Korea [2]Department of Surgery,Dankook University Hospital,Cheonan 31116,Chungcheongnam-do,South Korea

出　　处：《World Journal of Gastrointestinal Surgery》2025年第4期405-411,共7页世界胃肠外科杂志(英文)

基　　金：Supported by a research fund from Dankook University in 2024;this research was supported by the Bio&Medical Technology Development Program of the National Research Foundation(NRF)funded by the Korean government(MSIT)(RS-2023-00220408).

摘　　要：BACKGROUND Gastrointestinal duplication is a rare congenital anomaly of the digestive tract,with colonic manifestations being particularly uncommon.Malignant transformation of colonic duplication cysts is rare,with adenocarcinoma being the most frequently reported type.Herein,we report a rare case of adenocarcinoma originating from a colonic duplication cyst.CASE SUMMARY A 49-year-old woman was found to have an elevated cancer antigen 19-9 level during a routine checkup.Imaging revealed a well-defined abdominal cavity cystic mass,which was initially suspected to be an ovarian teratoma.Laparoscopic surgery revealed a duplication cyst,and pathological examination confirmed adenocarcinoma arising from the cyst.The mass within the transverse mesocolon was successfully excised by a colorectal surgeon.Immunohistochemical analysis confirmed adenocarcinoma with invasion into the muscularis propria.Postoperative endoscopy and positron emission computed tomography scan showed no signs of malignancy,except for an elevated cancer antigen 19-9 level.A multidisciplinary team recommended no further chemotherapy,advising routine follow-up for monitoring.CONCLUSION Colonic duplications,though rare,remain a differential diagnosis of unexplained abdominal masses,with complete resection being their primary treatment approach.

关 键 词：Gastrointestinal duplication Colonic duplication Surgical resection ADENOCARCINOMA Malignant transformation Case report 

分 类 号：R73[医药卫生—肿瘤]