An adenoma of the large intestine. It is usually a solitary, sessile, often large, tumor of colonic mucosa composed of mucinous epithelium covering delicate vascular projections. Hypersecretion and malignant changes occur frequently. (Stedman, 25th ed)

Synonyms: Villous Adenoma, Villous Adenomas, Adenoma, Villous, Adenomas, Villous