Enormous Sessile Villous Adenoma (1 of 3)

An 80 year-old female have a sessile mass between the first and second rectal valves.
 
Morphologically, villous adenomas of the colon are
generally sessile and papilliferous. Lesions that tend to secrete mucus. The epithelial element of these adenomas is more dysplastic than that seen in tubular adenomas and
consequently these have, in general, greater potential for
malignant change.