We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleHemangiopericytomas grade II are not benign tumors.AuthorsZweckberger, K.; Jung, C. S.; Mueller, W.; Unterberg, A. W.; Schick, U.PublicationActa Neurochirurgica, 2011, Vol 153, Issue 2, p385ISSN0001-6268Publication typearticleDOI10.1007/s00701-010-0877-1