An elderly male had rectal bleeding. A flat velvety mass was observed in the cecum. The provisional diagnosis was villous adenoma. A partial colectomy was performed. Invasion through the muscularis mucosae, but not into the muscularis propria, was observed on paraffin sections. Therefore, the final diagnosis was:

An elderly male had rectal bleeding. A flat velvety mass was observed

1.	An elderly male had rectal bleeding. A flat velvety mass was observed in the cecum. The provisional diagnosis was villous adenoma. A partial colectomy was performed. Invasion through the muscularis mucosae, but not into the muscularis propria, was observed on paraffin sections. Therefore, the final diagnosis was:
A.	pseudopolyp
B.	adenomatous polyp
C.	adenocarcinoma Dukes A
D.	adenocarcinoma Dukes B
E.	adenocarcinoma Dukes C
Answer» D. adenocarcinoma Dukes B

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