title: Subarachnoid hemorrhage as the initial presentation of cerebral venous thrombosis.
abstract: Cerebral venous thrombosis presenting as subarachnoid hemorrhage (SAH) is very rare. We present a woman with thrombosis of the superior sagittal, straight, transverse and sigmoid sinuses who presented with SAH in the right temporal sulcus and bilateral cerebellar sulci. Brain perfusion CT demonstrated a delay of the mean transit time and high cerebral blood volume around the right posterior temporal lobe and cerebellum. These findings were compatible with venous congestion and they suggest the possibility that extension of the dural sinus thrombosis into the superficial veins caused localized venous hypertension with dilatation of the thin, fragile-walled cortical veins which eventually ruptured into the subarachnoid space.
authors.affiliation: Department of Neurology and Cerebrovascular Medicine, Saitama International Medical Center, Saitama Medical University. yujik@saitama-med.ac.jp
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kato
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Takeda
authors.forename: Daisuke
authors.initials: D
authors.lastname: Furuya
authors.forename: Harumitsu
authors.initials: H
authors.lastname: Nagoya
authors.forename: Ichiro
authors.initials: I
authors.lastname: Deguchi
authors.forename: Takuya
authors.initials: T
authors.lastname: Fukuoka
authors.forename: Norio
authors.initials: N
authors.lastname: Tanahashi
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D020767:Intracranial Thrombosis / Q000150:complications*; D008875:Middle Aged; D055420:Perfusion Imaging; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis* / Q000209:etiology*; D014057:Tomography, X-Ray Computed; D020246:Venous Thrombosis / Q000150:complications*