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Definition
By Mayo Clinic staffDoctors typically discover stomach polyps while examining you for other reasons. Stomach polyps are rare, occurring in about 1 percent of people undergoing upper gastrointestinal endoscopy — a procedure that examines the lining of the stomach.
The three most common types of stomach polyps are:
- Hyperplastic polyps. These stomach polyps account for more than half of all diagnosed stomach polyps and develop into cancer in about 2 percent of cases.
- Fundic gland polyps. These stomach polyps, found in the top portion of the stomach (fundus), don't become cancerous, except in people with familial adenomatous polyposis (FAP) syndrome.
- Adenomas. Adenomas have a significant chance of becoming cancerous and arise from the stomach's glandular tissue, accounting for about 10 percent of stomach polyps.
