* Right hemicolectomy and left hemicolectomy refer to the resection of the ascending colon (right) and the descending colon (left), respectively. When part of the transverse colon is also resected, it may be referred to as an extended hemicolectomy. * Transverse<unk>  is also possible, though uncommon. * Sigmoidectomy is a resection of the sigmoid colon, sometimes including part or all of the rectum (proctosigmoidectomy). When a sigmoidectomy is followed by terminal colostomy and closure of the rectal stump, it is called a Hartmann operation; this is usually done out of impossibility to perform a "double-barrel" or Mikulicz colostomy, which is preferred because it makes "takedown" (reoperation to restore normal intestinal continuity by means of an anastomosis) considerably easier. * When the entire colon is removed, this is called a total<unk> , also known as Lane's Operation. If the rectum is also removed, it is a total proctocolectomy. * Subtotal<unk>  is resection of part of the colon or a resection of all of the colon without complete resection of the colon.
Colectomy
Bowel resection
Colostomy
Colostomy reversal
Ileostomy
Gastroenterostomy
Ureterosigmoidostomy
Coloanal anastomosis