Extended resection for carcinoma of colon and rectum.

Although surgery has been the mainstay of treatment for patients with colorectal carcinoma for more than a century, debate continues regarding the appropriate magnitude of operation for optimal survival. Invasion of contiguous organs is a legitimate indication for extended en bloc resection, including pelvic exenteration, in appropriately selected individuals. Extended lymphadenectomy, especially in resections for carcinoma of the rectum, is being reexamined with renewed enthusiasm. Improved perioperative care has permitted performance of more aggressive operative intervention, with improved cure rates for patients with colorectal neoplasms.