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Sporadic gastric epithelial polyps with relative frequency and estimated malignant potential
Sporadic gastric epithelial polyps with relative frequency and estimated malignant potential
Polyp type
% of all gastric polyps
Malignant potential
Hyperplastic polyp
17-55%
0.8-10% (>2 cm in size+)
Fundic gland polyp
47-72%
Negligible (but 4% in the setting of FAP)
Adenoma (including PGA)
1-10%
Adenoma with LGD: 0.6%/year
Adenoma with HGD: 6%/year
PGA: 12-47%
Oxyntic gland adenoma
Rare
Not established
FAP: familial adenomatous polyposis; PGA: pyloric gland adenoma; LGD: low-grade dysplasia; HGD: high-grade dysplasia.
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