(...KOH-loh-REK-tul KAR-sih-NOH-muh in SY-too)

Abnormal cells are found in the mucosa (innermost layer) of the colon and/or rectal wall. These abnormal cells may become cancer and spread into nearby normal tissue.

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• Colon Cancer Treatment
• Rectal Cancer Treatment

Figure

Stage 0 colorectal carcinoma in situ. Abnormal cells are found in the mucosa (innermost layer) of the colon/rectum wall. These abnormal cells may become cancer and spread into nearby normal tissue.