Adenocarcinoma of Colon

Adenocarcinoma of Colon •The tumor has typically well circumscribed margins •This lesion is totally circumferential •The thickened muscular wall (yellow arrow) beneath the tumor indicates deep wall invasion (at least Duke's B), in contrast to the delicate thin muscular wall associated with the adjoining normal mucosa (green arrow) (Description By:Martin Nadel, M.D. ) (Image Contrib. by:Melinda Sanders, M.D. UCHC )