Benign Gastric Tumors account for fewer than 2% of all gastric tumors. They are usually located in the antrum or corpus. Presentation can be similar to that of peptic ulcer or adenocarcinoma, and diagnosis is made by EGD or contrast radiography.
A. Gastric polyps
Gastric polyps are classified by histologic findings. Endoscopic removal is appropriate if the polyp can be completely excised.
- Hyperplastic polyps are regenerative rather than neoplastic and constitute 75% of gastric polyps. Risk of malignant transformation is minimal.
- Adenomatous polyps are the second-most-common gastric polyp and are neoplastic in origin. The incidence of carcinoma within the polyp is proportional to its size, with polyps of greater than 2 cm having a 24% incidence of malignancy. Patients with familial adenomatous polyposis have a 50% incidence of gastroduodenal polyps and require endoscopic surveillance. Surgical resection with a 2- to 3-cm margin of gastric wall can often be performed laparoscopically and is required if endoscopic excision is not possible.