FIG 2.

A craniospinal compliance curve in a 70-year-old woman with confirmed CVF (A) shows high compliance (ie, smaller change in pressure per increase in volume) with multiple abrupt pressure drops (arrows) above 10 cm H₂0. Recent brain MR imaging shows characteristic features of SIH (B), including reduced mamillopontine distance, low cerebellar tonsils, and pachymeningeal enhancement. A right T7–8 CVF was identified on decubitus CT myelography (C and D). Hyperdensity of the paraspinal vein and azygous vein (dashed circle) aids in identification of the fistula (white arrows). The patient was treated with percutaneous fibrin glue injection.