NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,894 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

Dukes A colorectal cancer
(dooks ... KOH-loh-REK-tul KAN-ser)
Cancer has spread from the mucosa (innermost layer) of the colon and/or rectal wall to the submucosa (layer of tissue under the mucosa) of the colon and/or rectal wall. Cancer may have spread to the muscle layer of the colon and/or rectal wall. Also called stage I colorectal cancer.