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Case Reports
. 2005;20(1):1-5.
doi: 10.1159/000086119. Epub 2005 May 30.

Aneurysms in twig-like middle cerebral artery

Hon-Man Liu  1 , Dar-Ming Lai, Yong-Kwang Tu, Yao-Hung Wang
Affiliations
Case Reports

Aneurysms in twig-like middle cerebral artery

Hon-Man Liu et al. Cerebrovasc Dis. 2005.

Abstract

Background: We report a vascular abnormality of the middle cerebral artery (MCA) that has not been described in the literature before.

Methods: Two patients (1 male and 1 female; age 44 and 67 years, respectively) were found to have a vascular abnormality in which the main trunk of the MCA had a twig-like form. Both patients presented with intracranial hemorrhage.

Results: In these 2 patients, the abnormality was seen before the genu of the MCA. They had an intracranial hemorrhage due to an associated aneurysm inside the twigs. The twig appeared to be a network between the bifurcation of internal carotid artery and insular segment of MCA, and it was different from the collateral circulation due to acquired occlusion or moyamoya disease.

Conclusion: This new type of vascular lesion of the MCA is not benign. It appears to be associated with the occurrence of an aneurysm, an important clinical aspect.

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