Glossary Term:


villous adenoma


<b>vih</b>-lus<b> ad</b>-no-muh or <b>ad</b>-uh-<b>NO</b>-muh


a benign (not cancer) polyp inside the colon or rectum with finger-like projections of gland cells that can be seen under the microscope. These finger-like structures generally make up at least half of the adenoma. Villous adenomas are usually broad-based, pre-cancerous lesions, and often cause rectal bleeding. They are usually removed when found. See also adenomatous polyp, colon, polyp, rectum, tubular adenoma, tubulovillous adenoma.