Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

Sign Up for a Free Account For information on discounts, see Plans & Pricing

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Posterior fossa subarachnoid hemorrhage and pseudoaneurysm

(A) Head CT without contrast: subarachnoid hemorrhage in the posterior fossa, most dense in the prepontine cistern and fourth ventricle. (B) Digital subtraction angiography: left vertebral artery injection, lateral view. A dissection of the left vertebral artery extends from the left posterior inferior cerebellar artery (PICA) origin to the vertebrobasilar junction. A pseudoaneurysm is present at the left PICA origin (Contributed by Dr. Jose Biller.)

Related Media