What it is according to Wiki
“A colostomy is a surgical procedure in which an opening (stoma) is formed by drawing the healthy end of the large intestine or colon through an incision in the anterior abdominal wall and suturing it into place.”
Why you Would need one
This is usually needed when a portion of your large intestine has to be removed either due to cancer, obstruction, or perforation. In those situations, doctors need to remove the affected areas of the colon and suture together the remaining healthy portions.
What it’s really like
“They bring out a portion of the small intestine out through the skin in the abdomen and tie that to a bag. And basically, that's where your shit will go.” AE, 4th year Med