stage I rectal cancer

Definition of stage I colorectal cancer

stage I colorectal cancer

(...KOH-loh-REK-tul KAN-ser)
Cancer has formed in the mucosa (innermost layer) of the colon and/or rectum wall and has spread to the submucosa (layer of tissue next to the mucosa) or to the muscle layer of the colon and/or rectum wall. Also called Dukes A colorectal cancer.

Source: NCI Dictionary of Cancer Terms