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Dural sinus thrombosis in spontaneous intracranial hypotension |
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| Authors: | Mario Savoiardo Silvia Armenise Pantaleo Spagnolo Tiziana De Simone Maria Luisa Mandelli Alessandra Marcone Giancarlo Morciano Cosma Andreula Eliana Mea Massimo Leone Luisa Chiapparini |
| Affiliation: | (1) Department of Neuroradiology, Istituto Nazionale Neurologico “C. Besta”, Via Celoria 11, 20133, Milano, Italy;(2) Department of Radiology, Card. G. Panico Hospital, Tricase, Lecce, Italy;(3) Department of Radiology, F. Ferrari Hospital, Casarano, Lecce, Italy;(4) Department of Neurology, San Raffaele Hospital, Ville Turro, Milano, Italy;(5) Department of Neuroradiology, Città di Lecce, Gruppo Villa, Maria, Lecce, Italy;(6) Department of Neurology, Istituto Nazionale Neurologico “C. Besta”, Milano, Italy |
| Abstract: | Dural sinus thrombosis (DST) is rarely associated with spontaneous intracranial hypotension (SIH). Engorgement of the venous system, caused by the CSF loss that occurs in SIH, is considered to favour the thrombosis, although signs of both SIH and DST are usually seen simultaneously at the first diagnostic MRI. We observed two patients with SIH and DST. Changes in pattern of headaches and MRI findings demonstrated that DST followed SIH. In SIH, the velocity of the blood flow in the dural sinuses may be reduced because of dilatation of the venous system which compensates the CSF loss. Other possible mechanisms seem unlikely on the grounds of both clinical presentation and MRI studies. Received in revised form: 6 December 2005 |
| Keywords: | spontaneous intracranial hypotension CSF loss dural sinus thrombosis venous hypervolemia blood flow velocity |
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