Epithelial polyps are the most common gastric polyps, which are masses of cells that form on the inner lining of the stomach. Stomach polyps usually do not cause any signs or symptoms. The disease is often detected in patients during gastroscopy and accounts for a fairly high rate - up to 25%.

Epithelial polyps are the most common type of gastric polyp. They include fundic gland polyps (FGPs), hyperplastic polyps, and adenomatous polyps. Other less common epithelial lesions that may appear as polyps include neuroendocrine tumors (formerly called carcinoids), ectopic pancreatic tissue, and pyloric adenomas.