Why does bowel bleeding occur after colon polyp removal?

Oct 25, 2022 Source: Cainiu Health
Disease description:

I had a colon polyp surgery a month ago, but I keep noticing blood in my stool when going to the bathroom, and medication doesn't seem to help. Why am I still having bloody stools after colon polyp removal?

Doctor's answer (1)
Dr. Cheng Yicheng
Passing blood in the stool after colon polyp removal is usually caused by factors such as polyp malignancy or lesions in other parts of the intestine. Patients should maintain a light diet after surgery to reduce intestinal irritation. If there is significant bleeding, medical attention is necessary, and further examinations are recommended, particularly a colonoscopy to evaluate the wound site.