In the following paragraphs, then, we'll learn more about colostomy, ileostomy, and urostomy. Colostomy - An Introduction A colostomy is the surgical process of causing a stoma between the large intestine and the skin of the abdomen. This stoma changes the exit for waste from the colon. It allows waste to leave the body through the abdominal wall, instead of the anus. A colostomy is done to treat…