Adeno-: Prefix referring to a gland, as in adenoma and adenopathy. From the Greek aden meaning originally “an acorn” and later “a gland” in the form of an acorn. Before a vowel, adeno- becomes aden-, as in adenitis (inflammation of a gland).
Adenocarcinoma: A cancer that develops in the lining or inner surface of an organ and usually has glandular (secretory) properties. More than 95 percent of prostate cancers are adenocarcinomas.
- Adenoid cystic carcinoma
Adenoid cystic carcinoma: A type of cancer that most often develops in the salivary glands of the head and neck. It may arise in other sites such as the skin, lacrimal gland, trachea, breast, cervix and prostate. Adenoid cystic carcinoma (ACC) has a characteristic appearance under the microscope. Abnormal “nests” or cords of certain cells […]
Adenoids: A lump of lymphoid tissue of varying size, located behind the nose in a space called the nasopharynx.
- Adenoids and Tonsils
These celebrated structures (adenoids and tonsils) in the back of the throat are composed of tissue similar to lymph nodes or “glands.”
Adenoma: A benign tumor that arises in or resembles glandular tissue. If an adenoma becomes cancerous, it is called an adenocarcinoma.