title: Venous hypertension associated with a posterior fossa dural arteriovenous fistula: another cause of bithalamic lesions on MR images.
abstract: We report a case of a posterior fossa arteriovenous fistula (AVF) with bithalamic hyperintensity of MR images. The thalamic abnormality improved after surgery, suggesting reversible venous hypertension as the pathogenesis of the finding, as opposed to infarction. This manifestation of a posterior fossa AVF should be considered in the differential diagnosis of bilateral thalamic disease.
authors.affiliation: Section of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
authors.forename: G P
authors.initials: GP
authors.lastname: Greenough
authors.forename: A
authors.initials: A
authors.lastname: Mamourian
authors.forename: R E
authors.initials: RE
authors.lastname: Harbaugh
mesh_terms: D001164:Arteriovenous Fistula / Q000175:diagnosis / Q000473:pathology* / Q000503:physiopathology; D002550:Cerebral Veins / Q000473:pathology; D003388:Cranial Fossa, Posterior; D004388:Dura Mater / Q000098:blood supply*; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013788:Thalamus / Q000473:pathology*; D014690:Venous Pressure