Reversible vertebral artery stenosis following corticotherapy in giant cell arteritis.

Accessible online at: www.karger.com/ene Fig. 1. Initial cervical MRA revealing severe stenosis of both vertebral arteries (left). Following steroids, significant repermeabilization of the vertebral arteries (middle, right). The level of stenosis is identical in both arteries and corresponds to the junction between the intracranial and extracranial portions. Fig. 2. Sagittal T 2 -weighted MRI revealing widespread cerebellar stroke.