One of the paired air spaces located in the body of the SPHENOID BONE behind the ETHMOID BONE in the middle of the skull. Sphenoid sinus communicates with the posterosuperior part of NASAL CAVITY on the same side.

Annotation

inflammation or sinusitis = SPHENOID SINUSITIS; fractures: coordinate SPHENOID SINUS /inj (IM) + SKULL FRACTURES (IM); neoplasms: coordinate IM with PARANASAL SINUS NEOPLASMS (IM)

DUI

D013101 MeSH Browser

CUI

M0020292