Sphenoparietal sinus

Last revised by William Howden on 31 Mar 2023

The sphenoparietal sinus is an inconsistent 1 dural venous sinus, which is located along the posteroinferior ridge of the lesser wing of the sphenoid bone. It forms as the confluence of the sinus of the lesser sphenoid wing and of the parietal portion of the frontal ramus of the middle meningeal vein. It drains into the cavernous sinus and receives tributaries from:

When these are large, the sphenoparietal sinus is also large.

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