Stoma formation (colostomy / ileostomy)

Category: General & Abdominal Surgery · All general & abdominal surgery

Stoma formation (colostomy / ileostomy) — General & Abdominal Surgery

What it is

A stoma is an opening made during surgery that brings a section of bowel onto the skin of the abdomen, where waste passes into a fitted bag. A colostomy uses the large bowel; an ileostomy uses the small bowel. Stomas may be temporary or permanent.

Why it is done

Stomas are created during surgery for bowel cancer, inflammatory bowel disease, blockage, bowel injury or to protect a join downstream while it heals.

How to prepare

Before planned surgery, a stoma nurse marks the best site on your abdomen and teaches you about appliance care. Emergency stomas are sited by the surgeon during the operation. You fast before surgery as usual.

What happens during the procedure

The stoma itself is formed as part of the main operation: the bowel end is brought through the abdominal wall and stitched to the skin, forming a small pink spout. The procedure adds a short time to the operation.

Afterwards — recovery & results

You will be taught to change the bag, care for the skin and manage diet before discharge. Output from an ileostomy is looser and more continuous than from a colostomy. Most people adapt over weeks and return to work, exercise and normal clothing; stoma nurses remain a long-term support.

Risks & considerations

Problems can include skin soreness, leaks, the stoma retracting or prolapsing, a hernia beside the stoma, and — with ileostomies — dehydration from high fluid losses, which needs prompt advice. Most issues are manageable with stoma-nurse support.

Watch: Stoma formation (colostomy / ileostomy) videos

Real procedure videos from the MedicalVideos.com library. Some clinical footage is graphic — that is the nature of a medical video library.

Frequently asked questions

Does a stoma smell or show under clothes?

Modern bags are odour-proof and flat. Other people will not know you have one. Emptying routines quickly become part of daily life.

Can a stoma be reversed?

Temporary stomas often can, once the reason for them has resolved and checks confirm healing. Your surgeon will discuss if and when reversal is appropriate for you.

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Please note: This page is educational information about a medical procedure or test. It does not replace the instructions of your own care team, who know your situation and whose preparation, fasting and medication advice you should follow if it differs from anything here. If you have symptoms that worry you, or an appointment you do not understand, contact your clinical team.