Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs AdenocarcinomaUpdated: 2019-11-01OverviewAdenocarcinoma is a form of cancer that starts in glandular cells, which create and release substances, such as mucus, in the body. These cells are found in tissue that lines certain organs such as the colon, lungs, pancreas, and prostate. © 1998-2019 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use