title: Angiographically occult arteriovenous malformations of the brainstem.
abstract: Two cases of infratentorial arteriovenous malformations that were occult to angiography but detected by computed tomography are discussed. In both cases a preoperative diagnosis of low-grade glioma was considered. Attention is drawn to the relative paucity of such lesions below the tentorium.
mesh_terms: D000293:Adolescent; D000328:Adult; D001933:Brain Stem / Q000098:blood supply*; D002533:Cerebral Angiography; D003388:Cranial Fossa, Posterior / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed