Abstract
We report a case of delayed multiple penetration of the sigmoid colon by a transanal foreign body. A 39-year-old man with abdominal pain was referred to our hospital due to the presence of a transanal foreign body. Physical examination revealed a palpable abdominal tumor with tenderness, but no muscular rigidity. Abdominal CT showed a foreign body in the pelvic cavity, without free air. Emergency laparotomy demonstrated purulent ascites and a shaped foreign body in the sigmoid colon. Multiple penetration due to pressure necrosis by the foreign body was observed in the sigmoid colon. Partial resection of the colon with covering colostomy was performed. The postoperative course was uneventful.