If a colon needs to be removed because of colon cancer are their alternatives to a external bag?

Bag is rarely needed: Colostomy( external bag ) is rarely needed for elective cancer surgery. It is more frequently used if the cancer is located very close to the anus, Also, a temporary colostomy may be used for emergency surgery when cancer is obstructing colon completely and the bowel cannot be cleaned prior to the surgery.

No: If the distal colon is removed with the anal canal and sphincters, the proximal remaining bowel is brought out as a colostomy. At one time there was an attempt to bring the proximal bowel out thru a weak or non functional anal sphincter. The bowel brought out as such had no control and patient had to wear a diaper at all times. The colostomy can be irrigated to eliminate need for a bag.