Colorectal polyp
From Ask Dr Wiki
A colorectal polyp (or colon polyp) is a fleshy growth (polyp) occurring on the lining of the colon or rectum.[1] Untreated colorectal polyps can develop into colorectal cancer.[2]
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Symptoms
Colorectal polyps are not usually associated with symptoms.[2] When they occur, symptoms include rectal bleeding, bloody stools, abdominal pain and fatigue.[2] A change in bowel habits may occur including constipation and diarrhoea.[3] Occasionally, if a polyp is big enough to cause a bowel obstruction, there may be nausea, vomiting and severe constipation.[3]
Screening and diagnosis
Colorectal polyps can be detected using a faecal occult blood test, flexible sigmoidoscopy, colonoscopy, virtual colonoscopy, digital rectal examination, barium enema or a pill camera.[3]
Treatment
Polyps can be removed during a colonoscopy or sigmoidoscopy using a wire loop that cuts the stalk of the polyp and cauterises it to prevent bleeding.[3]
Structure
Polyps are either pedunculated (attached to the intestinal wall by a stalk) or sessile (grow directly from the wall).[4]
