Adenomatous polyps

Polyps may be tubular, tubulovillous, or villous.

The risk of malignant transformation increases with larger size and villous type.

Gastric adenocarcinoma may be found in approximately 20% of cases.

Endoscopic polypectomy is effective if the entire polyp is removed, and no invasive carcinoma is found on review of the histologic specimen.

Surgical resection is indicated for sessile lesions greater than 2 cm, polyps with invasive