Surgical treatment of a sigmoid volvulus associated with megacolon: report of a case.

Sigmoid volvulus occurring concomitantly with megacolon is an uncommon cause of bowel obstruction, and various approaches to treatment have been proposed. We report herein a case of sigmoid volvulus with megacolon that was successfully treated by elective surgery following endoscopic reduction during the same hospital stay. A 70-year-old woman was admitted to our hospital with abdominal pain, distension, and severe constipation. Physical examination, plain abdominal X-ray, and barium enema confirmed a sigmoid volvulus and further examinations revealed concomitant megacolon. An elective sigmoid colectomy was performed following successful endoscopic decompression. The postoperative course was uneventful and there was no residual colonic dysmotility. Histologically, no aganglionic tissue was observed in the resected specimen.