• Internal medicine · Jan 2006

    Case Reports

    A hyperdense artery sign and middle cerebral artery dissection.

    • Yusuke Yakushiji, Yoshinori Haraguchi, Shu Soejima, Yukinori Takase, Akira Uchino, Shunzo Koizumi, and Yasuo Kuroda.
    • Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan.
    • Intern. Med. 2006 Jan 1; 45 (22): 131913221319-22.

    AbstractWe 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.

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