抄録
A 95-year-old female. The patient visited our hospital with a 2- to 3-day history of melena and anal pain. Physical examination at first consultation revealed anal prolapse of an incarcerated bowel segment containing a nodule-aggregating tumor. An abdominal/pelvic computed tomography (CT) revealed the multilayered appearance of a bowel intussusception with the sigmoid colon as the leading point prolapsing through the anus, with a tumor at the tip. She was diagnosed as having sigmoid colon cancer with intussusception of the bowel segment containing the tumor prolapsing through the anus. She was initially treated by endoscopic reduction and transanal decompression with an indwelling tube, followed by an elective sigmoidectomy on the 4th hospital day. The postoperative course was uneventful, and the patient was discharged on the 21st postoperative day. We report this case of sigmoid colon cancer with intussusception prolapsing through the anus, with the tumor-containing bowel segment as the leading point, as a relatively rare condition.
