Teenager with sudden vision loss

MRV of idiopathic intracranial hypertension
Sagittal T1 MRI without contrast of the brain (left) shows a nearly empty sella. 3D reconstruction of an MRV with contrast of the brain looking from the top down (right) shows stenosis of the lateral aspect of the transverse sinuses bilaterally.

The diagnosis was idiopathic intracranial hypertension.