An adenoma is a benign growth in the top layer of tissue in a gland (eg the thyroid) or the mucus membrane lining the gastrointestinal tract (stomach and bowel). Although they are usually harmless, a cancer can develop out of an adenoma.
An adenoma is a benign growth in the top layer of tissue in a gland (eg the thyroid) or the mucus membrane lining the gastrointestinal tract (stomach and bowel). Although they are usually harmless, a cancer can develop out of an adenoma.