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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 23:1402-1403, September 2002
© 2002 American Society of Neuroradiology

Case Report
BRAIN

Polycythemia Mimicking Venous Sinus Thrombosis

John F. Healy and Clint Nichols^a

^a From the University of California, San Diego, San Diego, CA

Address reprint requests to John F. Healy, 9500 Gilman Drive, Mail Code 9114, La Jolla, CA 92093

Summary: Venous sinus thrombosis is a relatively uncommon disorder that frequently is associated with confusing clinical findings and delayed diagnosis. Patients are often screened with unenhanced CT, and CT findings may be subtle and may include hyperattenuation of cerebral veins or venous sinuses secondary to intracranial thrombosis. This hyperattenuation may be mimicked by polycythemia, as shown in this case.

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