The adenoid , also known as a pharyngeal tonsil or nasopharyngeal tonsil , is a mass of lymphatic tissue situated posterior to the nasal cavity , in the roof of the nasopharynx , where the nose blends into the throat .
Adenoids ( also called pharyngeal tonsils , or nasopharyngeal tonsils ) are tissues at the very back of the nose , in the roof of the nasopharynx , where the nose blends into the mouth .