stylistic:tone
Surgery

At an early stage, colorectal cancer may be removed during a colonoscopy using one of several techniques, including endoscopic mucosal resection or endoscopic submucosal dissection. Endoscopic resection is possible if there is low possibility of lymph node metastasis and the size and location of the tumor make en bloc resection possible. For people with localized cancer, the preferred treatment is complete surgical removal with adequate margins, with the attempt of achieving a cure. The procedure of choice is a partial colectomy (or proctocolectomy for rectal lesions) where the affected part of the colon or rectum is removed along with parts of its mesocolon and blood supply to facilitate removal of draining lymph nodes. This can be done either by an open laparotomy or laparoscopically, depending on factors related to the individual person and lesion factors. The colon may then be reconnected or a person may have a colostomy.