Savoiardo Mario, Armenise Silvia, Spagnolo Pantaleo, De Simone Tiziana, Mandelli Maria Luisa, Marcone Alessandra, Morciano Giancarlo, Andreula Cosma, Mea Eliana, Leone Massimo, Chiapparini Luisa
Department of Neuroradiology, Istituto Nazionale Neurologico C. Besta, Via Celoria 11, 20133, Milano, Italy.
J Neurol. 2006 Sep;253(9):1197-202. doi: 10.1007/s00415-006-0194-z. Epub 2006 May 6.
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.
硬脑膜窦血栓形成（DST）很少与自发性颅内低压（SIH）相关。SIH中发生的脑脊液流失导致静脉系统充血，这被认为有利于血栓形成，尽管在首次诊断性MRI上通常同时可见SIH和DST的征象。我们观察了两名患有SIH和DST的患者。头痛模式和MRI表现的变化表明DST发生在SIH之后。在SIH中，由于静脉系统扩张以补偿脑脊液流失，硬脑膜窦内的血流速度可能会降低。基于临床表现和MRI研究，其他可能的机制似乎不太可能。
