A Case of Megacolon with Intussusception Prolapsing through the Anus

Kazuhiro Kaneko, Hiroshi Tomita*, Haruhiko Makino* and Katsuyoshi Hatakeyama

Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
Department of Surgery, Niigata Prefectural Sakamachi Hospital*

We report a case of a megacolon with intussusception prolapsing through the anus. A 38-year-old woman seen in an emergency for suspected rectal prolapse after defecation underwent emergency surgery after digital exploration confirmed prolapse. After manual by reducing the intussusception, we conducted a sigmoidectomy, but no tumor was found that might have cause the intussusception. This case is extremely rare, because all of the 30 - some cases of such intussusception reported in Japan were caused by a tumor. We suggest that accurate diagnosis including checking for tumors and avoiding forcible manual reduction in surgery are very important considerations in such cases.

Key words
adult intussusception, megacolon, transanal prolapse

Reprint requests
Kazuhiro Kaneko Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
1-757 Asahimachidori, Niigata, 951-8510 JAPAN

Accepted
March 22, 2006

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