A<unk> , formally known as<unk>  resection of the rectum and colon and<unk>  excision of the rectum or simply<unk>  resection (less precise), is a common surgery for rectal cancer and occasionally is performed to remove a diseased or ruptured portion of the intestine in cases of diverticulitis. It is commonly abbreviated as LAR. LARs are for cancer in the proximal (upper) two-thirds of the rectum which lends itself well to resection while leaving the rectal sphincter intact.
Lower anterior resection
Abdominoperineal resection
Pinealectomy
Radical retropubic prostatectomy
Segmental resection
Radical perineal prostatectomy
Total mesorectal excision
Laparoscopic radical prostatectomy