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Sphenoid sinus

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The sphenoid sinus lies deep in the middle of the skull. It drains anteriorly into the sphenoethmoidal recess, which lies above the superior turbinate.

The sphenoid sinus is flanked by the cavernous sinuses and so is closely related to the internal carotid arteries and cranial nerves III-VI. These relations are important in transphenoidal surgery. The optic foramen, containing the optic nerve, is closely apposed to the sphenoid at the outer anterior angle where the roof and lateral wall meet.


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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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