A Case of Ileus Due to Adenocarcinoma Arising at a Colostomy Site after a Surgical Treatment for a Rectosigmoid Cancer

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  • イレウスを呈した骨盤内臓全摘術後人工肛門癌の１例

Abstract

<p>Cancer arising at a colostomy site is rare and few cases have been reported. Here, we report a case of ileus due to adenocarcinoma arising at a sigmoid colostomy site after a surgical treatment for rectosigmoid cancer. A 54-year-old man underwent total pelvic exenteration and resection of ileum for rectosigmoid cancer invading bladder and ileum. Nine months after surgery, a tumor was seen at the sigmoid colostomy site, and CT findings showed peritoneal dissemination and metastases of lymph nodes and rectus abdominis muscle. Two months later, abdominal pain occurred and dilatation of colon was observed. A cancer was seen at the colostomy site, stenosis was observed just oral side of the colostomy, and it caused ileus of colon. It was thought that recurrent cancer at the colostomy site was reduced by chemotherapy, which caused stenosis of colon and ileus. We created transverse colostomy because of obstruction. Chemotherapy was resumed two weeks after the operation, and cancer at the colostomy site was reduced. This is the first case of ileus caused by cancer occurring at the colostomy site in Japan.</p>

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