J Korean Soc Radiol.  2011 Nov;65(5):441-445.

Ruptured Dissecting Aneurysm of the Middle Cerebral Artery with Spontaneous Resolution: A Case Report

  • 1Department of Radiology, St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Korea. ihn@catholic.ac.kr


Dissecting aneurysms of the middle cerebral artery (MCA) are known to cause cerebral infarcts in younger people and can also cause subarachnoid hemorrhage (SAH) or intracranial hemorrhage. Bleeding caused by an isolated dissecting aneurysm of the MCA is relatively rare. We report the case of a young woman with SAH that occurred subsequent to a ruptured dissecting aneurysm of the MCA which resolved spontaneously as demonstrated by angiography.

MeSH Terms

Aneurysm, Dissecting
Intracranial Hemorrhages
Middle Cerebral Artery
Subarachnoid Hemorrhage


  • Fig. 1 CT on admission. A. Non-contrast CT scan shows a thin layer of subarachnoid hemorrhage (SAH) in the right Sylvian fissure. B. SAH accompanied by intracranial hemorrhage in the temporal lobe.

  • Fig. 2 Arterial phase of the right carotid angiogram. The anterior oblique view (A) and lateral view (B) show aneurysmal dilatation of the M2 segment of the right middle cerebral artery (arrow).

  • Fig. 3 Follow-up right carotid angiogram. The anterior posterior view (A) and lateral view (B) show the disappearance of the dissecting aneurysm with a narrowing of the inferior limb of the middle cerebral artery (thin arrow) and filling defect in the distal artery (thick arrow).

  • Fig. 4 Three-year follow-up magnetic resonance imaging. A. T2WI MRI scan of the brain shows encephalomalacia in the right frontal lobe. B. T2* GRE scan shows a residual hemosiderin deposit in the previous hemorrhage. Note.-T2WI = T2-weighted image, GRE = gradient recalled echo


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