NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,105 terms related to cancer and medicine.

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adenocarcinoma
(A-deh-noh-KAR-sih-NOH-muh)
Cancer that begins in glandular (secretory) cells. Glandular cells are found in tissue that lines certain internal organs and makes and releases substances in the body, such as mucus, digestive juices, or other fluids. Most cancers of the breast, pancreas, lung, prostate, and colon are adenocarcinomas.