title: Magnetic resonance imaging of an angiographically occult arteriovenous malformation--case report.
abstract: The authors report a case of histologically confirmed cerebral arteriovenous malformation (AVM) in which cerebral angiography demonstrated only mass effect. Magnetic resonance (MR) imaging yielded valuable preoperative diagnostic information. T1- and T2-weighted MR imaging demonstrated an area of mixed signal intensity with a mossy appearance, evidence of a hematoma around the mass, and spots of zero signal intensity within the mass, suggesting the presence of vessels with accelerated blood flow.
authors: H
authors: H
authors: Yamada
authors: S
authors: S
authors: Fujita
authors: T
authors: T
authors: Shirakuni
mesh_terms: D000328:Adult; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis*; D002542:Intracranial Embolism and Thrombosis / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male