The adenoids are lymphoid tissue at the back of the nose in the area above the throat called the nasopharynx. We cannot see this when we look in the mirror because it sits above the soft palate ...

But tonsillar tissue also includes the lingual tonsil (located in the base of the tongue), tubal tonsils, and the adenoid ...

Medically reviewed by Benjamin F. Asher, MD Serous otitis media (SOM) is when the eustachian tube does not drain and causes fluid to build up in the middle ear space. The fluid build-up can cause ...