A Case of Descending Colon Cancer with Colocolic Fistula and Jejunocolic Fistula

Abstract

We report a case of descending colon cancer which formed a colocolic fistula and jejunocolic fistula at the same time. A 73-year-old woman visited our hospital because of left lower abdominal tumor and anemia. We made a diagnosis of descending colon cancer with suspected fistulation into the transverse colon and small intestine. Upon laparotomy, the tumor had infiltrated the transverse colon and the jejunum 40cm on the anal side from the Treitz ligament. Left hemicolectomy and partial resection of the jejunum were performed. On the resected specimen, fistula formation into the transverse colon mucosa and jejunal mucosa was revealed. Histopathological study showed moderately differentiated adenocarcinoma, without lymph node metastasis. The incidence of colon cancer with fistula formation in other intestine is very rare. This is the first report of a synchronous complicated case of colocolic fistula and jejunocolic fistula.