Adenoid

The adenoid, also known as the pharyngeal tonsil, or nasopharyngeal tonsil is the superior-most of the tonsils. It is a mass of lymphoid tissue located behind the nasal cavity, in the roof and the posterior wall of the nasopharynx, where the nose blends into the throat. In children, it normally forms a soft mound in the roof and back wall of the nasopharynx, just above and behind the uvula.

The term adenoid is also used in anatomy to represent adenoid hypertrophy, the abnormal growth of the pharyngeal tonsils.