Gastric polyps are uncommon findings, even on endoscopy where they are encountered in only 2-6% of patients.
Pathology
There are a number of gastric polyp subtypes 1-3:
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non-neoplastic polyps
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hyperplastic polyps
virtually no malignant potential
typically small (<1 cm), multiple, and sessile
associated with H. pylori infection, so most of them regress after treatment
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hamartomatous polyps
inflammatory fibroid polyp
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neoplastic polyps
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fundic gland polyp (most common)
may arise sporadically or as part of familial adenomatous polyposis (FAP)
increase in incidence by proton pump inhibitors
in some texts, these are grouped with hyperplastic polyps
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adenomatous polyp: precursor lesion to gastric adenocarcinoma
polypoid gastric adenocarcinoma
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There are a variety of lesions that may have polypoid-growth ref:
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