Venous Hypertension Associated with a Posterior Fossa Dural Arteriovenous Fistula: Another Cause of Bithalamic Lesions on MR Images

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 fo...

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Bibliographic Details
Published in:American journal of neuroradiology : AJNR 1999-01, Vol.20 (1), p.145-147
Main Authors: Greenough, Glen P, Mamourian, Alex, Harbaugh, Robert E
Format: Article
Language:English
Subjects:
Arteriovenous Fistula - diagnosis
Arteriovenous Fistula - pathology
Arteriovenous Fistula - physiopathology
Biological and medical sciences
Cerebral Veins - pathology
Cranial Fossa, Posterior
Dura Mater - blood supply
Humans
Magnetic Resonance Angiography
Magnetic Resonance Imaging
Male
Medical sciences
Middle Aged
Neurology
Thalamus - pathology
Vascular diseases and vascular malformations of the nervous system
Venous Pressure
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Description
Summary: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.
ISSN:0195-6108
1936-959X