RT Journal Article SR Electronic T1 Polycythemia Mimicking Venous Sinus Thrombosis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1402 OP 1403 VO 23 IS 8 A1 Healy, John F. A1 Nichols, Clint YR 2002 UL http://www.ajnr.org/content/23/8/1402.abstract AB 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.