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Is passing stool rectally normal 9 months after colostomy?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I am visiting a friend who has a colostomy bag. She mentioned that yesterday she experienced some mild pain, followed by a sensation of needing to use the bathroom. For the first time in nine months, she passed stool through her rectum. Is this considered normal? Please help.

Thank you in advance.

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

Your friend had surgery that resulted in the placement of a colostomy bag (it is attached to the stoma to collect the waste). She recently experienced mild pain followed by a sensation of needing to use the bathroom, and for the first time in nine months, she passed stool through her rectum. While this may seem unusual, it can happen for several reasons depending on the type of surgery she underwent.

Passing stool per rectum after a colostomy (a surgical procedure that creates an opening (stoma) in the colon, allowing waste to exit the body through the abdomen instead of the rectum) may be due to retained fecal matter or mucus discharge, which can accumulate in the remaining portion of the bowel. In some cases, there may be partial diversion, where a small amount of stool continues to pass through the original bowel segment. Rarely, it may suggest a fistula (an abnormal connection or passageway that develops between two hollow organs) or leakage around the stoma (an opening created surgically on the body's surface) site that allows communication between the two bowel segments.

To better understand her condition, I would need to ask a few important questions:

  • What was the amount and consistency of the stool passed?

  • Was there any bleeding along with the discharge?

  • Has she had abdominal pain or any additional symptoms recently?

Knowing the specific type of surgery she underwent would also help narrow down the possible causes.

She must consult her primary surgeon as soon as possible for a proper clinical examination and investigation. Her responses to these questions, along with a professional assessment, will help in determining the cause and guiding the appropriate management plan. Early evaluation can prevent potential complications.

I hope this helps.

Kindly revert so I can assist you further.

Thank you.

Medically reviewed byiCliniq medical review team

Published At September 9, 2025
Reviewed AtSeptember 9, 2025

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