Laparoscopic subtotal proctocolectomy for synchronous triple colorectal cancers: a case report.
A 42-year-old woman presented with abdominal pain. On the basis of CT results, we diagnosed her condition as bowel obstruction caused by advanced transverse colon cancer. Colonoscopy findings showed three lesions: (i) an advanced tumor in the transverse colon; (ii) a laterally spreading descending colon tumor; and (iii) a rectal polyp. The tumors and the polyp were all pathologically diagnosed as adenocarcinoma. After inserting a self-expanding metallic stent into the main tumor of the transverse colon to decompress the bowel, we performed endoscopic submucosal dissection of the laterally spreading descending colon tumor. Pathological examination results showed submucosal invasion and a positive margin. Because we endoscopically identified that the rectal polyp was invading the submucosa, we performed laparoscopic subtotal proctocolectomy and ileorectal anastomosis with lymph node dissection along the surgical trunk; we also performed central vascular ligation of the ileocolic artery, right and left branches of the middle colic artery, and inferior mesenteric artery. The patient's postoperative course was uneventful. We present this case because there have been few reports on laparoscopic subtotal or total proctocolectomy for synchronous multiple colorectal cancers.