%0 Journal Article %T Angiographic Evidence of a Purely Pial Bihemispheric Intracranial Hemangiopericytoma %A Avi Setton %A David J. Chalif %A Jiang Y. Li %A Nathaniel Stetson %A Sudhakar Vadivelu %J Archive of "Case Reports in Neurological Medicine". %D 2016 %R 10.1155/2016/5245078 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4736393/