FIG 2.

Skull pitting, meningoceles, and CSF leak in a patient who presented with rhinorrhea. Axial and coronal CT images (A and B) demonstrate substantial pitting along the anteromedial aspect of the left middle cranial fossa (dashed ovals, A and B), with complete opacification of the left sphenoid sinus (asterisks), concerning for a CSF leak. Milder pitting is noted on the right (solid arrows). Corresponding MR imaging (C and D) confirms a meningocele protruding into the left sphenoid sinus (dashed ovals, C and D). MRV (not shown) noted smooth tapered stenoses involving both transverse sinuses, and the patient was ultimately diagnosed with pseudotumor cerebri.