What causes a stool to pass through the rectum after colostomy?

A colostomy is a surgical procedure that creates an opening in the abdomen (stoma) and connects the colon to the outside of the body. This allows stool to bypass the rectum and anus. In most cases, a colostomy is permanent, but in some cases, it may be temporary.

After a colostomy, it is normal for some stool to pass through the rectum. This is because the rectum is still connected to the colon, and stool can still move through it. However, the majority of stool should pass through the stoma.

There are a few reasons why stool might pass through the rectum after a colostomy:

* The stoma is not functioning properly. If the stoma is too small or is blocked, stool may not be able to pass through it properly. This can cause stool to build up in the rectum and eventually pass through.

* The rectum is not functioning properly. If the rectum is damaged or has been removed, it may not be able to hold stool properly. This can also cause stool to pass through the rectum.

* Diarrhea. Diarrhea can cause stool to pass through the rectum even if the stoma is functioning properly. This is because diarrhea is watery and loose, and it can easily leak through the rectum.

If you are concerned about stool passing through the rectum after a colostomy, talk to your doctor. They can help you determine the cause and recommend treatment if necessary.