An abnormality of the maxillary sinus, one of the mucosa-lined, normally air-filled paranasal sinuses of the bones of the skull. The maxillary sinus is located within the skeleton of the midface, lateral to the nasal cavity.
Synonyms:
exact_synonym:
Abnormality of the antrum of Highmore; Abnormality of the maxillary antrum; Abnormality of the upper jaw sinus