Yakushiji Yusuke, Haraguchi Yoshinori, Soejima Shu, Takase Yukinori, Uchino Akira, Koizumi Shunzo, Kuroda Yasuo
Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan.
Intern Med. 2006;45(22):1319-22. doi: 10.2169/internalmedicine.45.1888. Epub 2006 Dec 15.
We describe a rare case of spontaneous middle cerebral artery (MCA) dissection that caused cerebral infarction and subarachnoid hemorrhage (SAH), which also presented with a hyperdense artery sign. A hyperdense artery sign of the MCA in acute cerebral infarction strongly indicates thromboembolic MCA occlusion, which is often treated with thrombolytic therapy. However, thrombolytic therapy for intracranial artery dissections has both risks and benefits, due to the association of artery dissections with SAH. Therefore, it is important to keep in mind that an MCA dissection can also cause cerebral infarction with a hyperdense artery sign, particularly in young patients presenting with headache.
我们描述了一例罕见的自发性大脑中动脉（MCA）夹层病例，该病例导致脑梗死和蛛网膜下腔出血（SAH），且伴有动脉高密度征。急性脑梗死时大脑中动脉的动脉高密度征强烈提示血栓栓塞性大脑中动脉闭塞，这种情况通常采用溶栓治疗。然而，由于动脉夹层与蛛网膜下腔出血相关，颅内动脉夹层的溶栓治疗既有风险也有益处。因此，重要的是要记住，大脑中动脉夹层也可导致伴有动脉高密度征的脑梗死，尤其是在出现头痛的年轻患者中。
