Adenocarcinoma. This is a common form of colorectal cancer. From About.com Definition of Adenocarcinoma Let's break it down. "Adeno-" is a prefix that means "gland." In general, glands secrete things and are classified as endocrine or exocrine. Endocrine glands secrete things into the bloodstream, like hormones. Exocrine glands secrete things that go outside of the body, like mucus and sweat. A carcinoma is a malignant tumor that starts in epithelial tissue. Put the two words together and you get "adenocarcinoma," which means a malignant tumor in epithelial tissue, specifically in a gland. Cause of Adenocarcinoma Virtually all adenocarcinomas develop from adenomas. In general, the bigger the adenoma, the more likely it is to become cancerous. For example, polyps larger than two centimeters (about the diameter of a nickel) have a 30-50 percent chance of being cancerous. You can learn more about polyp size and colon cancer risk by viewing the Polyp Size...
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