A Case of Collagenous Colitis Causing Colonic Penetration

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  • 腸間膜穿通をきたしたcollagenous colitisの1例

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Abstract

A 72-year-old man presenting with sudden left-sided abdominal pain and watery stools was found by abdominal computed tomography to have extra-intestinal gas and inflammation of the adipose tissue corresponding to the descending colon. Under a suspected diagnosis of a colonic penetration, emergency diagnostic laparoscopy was performed. As the splenic flexure of the colon was found to penetrate into the mesentery, a segmental colonic resection including the penetrating lesion was performed laparoscopically. With the macroscopic finding of two longitudinal mucosal ulcerations and the microscopic finding of a thickened subepithelial collagen band, the patient was diagnosed as having collagenous colitis. The patient gave a history of treatment with oral lansoprazole for 5 months, and proton pump inhibitors are well-recognized as being among the possible causes of collagenous colitis. Administration of lansoprazole was stopped, and the patient has had no abdominal pain or watery stools until date, 6 months after the surgery.

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