Sarcoidosis of the Skull: A Systematic Review.

Background: Lesions of the skull make up a small but important part of neurosurgical practice. Several systemic disorders may involve the cranial vault including neoplastic and non-neoplastic conditions. Sarcoidosis of the skull is a little-known cause of calvarial involvement that has been rarely reported in the literature.

Brain Stem Ischemic Stroke Associated with Anaphylaxis.

Anaphylaxis is a serious allergic reaction that may have different manifestations including hypotension. It is reported that vertebral artery hypoplasia (VAH) may be present in up to 20% of the general population. Previous studies have demonstrated that patients with VAH have a higher risk of developing an ischemic stroke in the area supplied by this hypoplastic artery.