adenoid. normal and enlarged adenoid

adenoid adenoidectomy adenoiditis adenoids adenotonsillectomy anatomical anatomy cavity disease ear enlarged ent esophagus eustachian gland glue head health healthcare human illustration immune infection lymphatic medical medicine mouth nasal nasopharyngeal nasopharynx nose opening oral otitis pharyngeal pharynx position respiratory science section show side sinus sinusitis system throat tissue tongue tonsil tonsils tract tube upper vector view