Zamora Carlos A, Lin Doris D
Division of Neuroradiology, The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland.
J Neurosurg. 2015 Nov;123(5):1184-7. doi: 10.3171/2014.10.JNS142172. Epub 2015 Apr 24.
Hyperdense enhancing subdural effusion due to contrast extravasation has been recently described as a potential mimicker of acute subdural hematoma following a percutaneous coronary procedure. Herein, the authors report on 2 patients who presented with subarachnoid hemorrhage from ruptured cerebral aneurysms and who developed enhancing subdural effusions mimicking acute subdural hematomas after angiography and endovascular coil placement. In 1 case, the subdural effusions completely cleared but recurred after a second angiography. CT attenuation values higher than expected for blood, as well as the evolution of the effusions and density over time, allowed for differentiation of enhancing subdural effusions from acute subdural hematomas.
由于造影剂外渗导致的高密度强化硬膜下积液最近被描述为经皮冠状动脉介入术后急性硬膜下血肿的潜在模仿者。在此，作者报告了2例因脑动脉瘤破裂出现蛛网膜下腔出血的患者，他们在血管造影和血管内弹簧圈置入术后出现了模仿急性硬膜下血肿的强化硬膜下积液。在1例病例中，硬膜下积液完全清除，但在第二次血管造影后复发。CT衰减值高于血液预期值，以及积液的演变和密度随时间的变化，有助于将强化硬膜下积液与急性硬膜下血肿区分开来。
