Abstract
We report a case of sigmoid colon cancer with intussuception prolapsing through the anus treated with transanal resection.
A 90–year–old woman observed but not treated at her own request for four years after being diagnosed with sigmoid colon cancer was seen for a tumor prolapsing through the anus accompanied by anal pain. Physical examination confirmed intussusception prolapse, with the tumor in the lead. The tumor was diagnosed on biopsy as moderately differentiated adenocarcinoma. Pelvic computed tomography (CT) indicated a multilayered structure in line with these findings. Chest and abdominal CT showed multiple pulmonary and liver metastases necessating partial transanal resection of the sigmoid colon without lymph node dissection using a circular stapler. After resection and autosuturing, the intestine was entered naturally through the inside of the pelvic cavity. The woman had no complications, and was discharged on postoperative day 21.
