GI17 adenocarcinoma of the colon This form of cancer second only to cancer of the lung in cancer deaths in this country. It is an adenocarcinoma of the colon.
Most adenocarcinomas occur in the rectum or sigmoid colon.
This example is of the ulcerating variety. Others types can be fungating or diffusely infiltrating. More information on colon cancer is avalable from the Tulane's Neoplasia Laboratory Review .