Cancer is a widespread, deadly disease in which certain body cells multiply without apparent control, destroying healthy tissue and organs. It occurs in most species of animals and plants, as well as humans. There are more than 100 identifiable forms of cancer and they can affect any part of the body. Adenocarcinomas are a type of carcinoma that arise from cells that excrete mucous or other substances. Most breast cancers are adenocarcinomas, but the intestinal tract is the most common site for these tumors, colon cancer being the most prevalent form.
Adenocarcinomas also affect the pancreas, lungs, ovaries in women, and prostate in men.
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