核磁共振硬脑膜强化揭示脑静脉和静脉窦血栓形成的病因

在脑静脉和静脉窦血栓形成(CVST)患者，硬脑膜强化是一种常见的核磁共振影像表现，通常被认为是继发于静脉和静脉窦血栓。我们报道了2例有明显和广泛硬脑膜强化的CVST患者，硬脑膜强化的原因一例是硬脑膜炎，另一例为自发性低颅压。硬脑膜炎和自发性低颅压也被确定为CVST的病因。对2例患者的临床特征进行了总结。在CVST患者，硬脑膜强化并不总是CVST的继发改变，而有可能反应了CVST的潜在病因。一旦在CVST患者发现弥漫性的硬脑膜显著强化，需要进行全面的相关检查以除外能够导致CVST的硬脑膜自身病变。

Dural enhancement detected by MRI reflecting the underlying causes of cerebral venous sinus thrombosis

Dural enhancement detected by magnetic resonance imaging is a common finding in patients with cerebral venous sinus thrombosis (CVST) and is usually interpreted as a change secondary to CVST. We report two cases of CVST with intense and diffuse dural enhancement that resulted from pachymeningitis in one patient and spontaneous intracranial hypotension in another. Pachymeningitis and spontaneous intracranial hypotension were also determined to be the underlying causes of CVST. The clinical data of these two patients are described. In patients with CVST, dural enhancement is not always a secondary change to CVST. It can be a manifestation of the underlying causes of CVST. When diffuse and intense dural enhancement is revealed, sufficient ancillary tests are warranted to rule out other potential pathological changes of the dura mater that can result in CVST.