Adenomatous Gastric Polyp
Left: Smooth, benign-appearing gastric polyp grossly indistinguishable from hyperplastic polyps, this lesion surprisingly proved to be a tubular adenoma with high-grade dysplasia on biopsy, and was therefore subsequently excised.
Center: 39 year-old woman with hereditary colonic polyposis. Benign gastric fundic gland polyps, which these appear to be grossly, are common in colonic polyposis; however, some of these gastric polyps exhibited focal adenomatous change histologically.
Right: Prepyloric antral polypoid lesion in a 45 year old woman undergoind endoscopy for abdominal pain and anemia.
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