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KMID : 0978920120130040189
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Korean Journal of Clinical Geriatrics
2012 Volume.13 No. 4 p.189 ~ p.195
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Insular Involvement in Acute Middle Cerebral Artery Territory Infarction
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Kim Meyung-Kug
Yoo Bong-Goo
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Abstract
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Background: The frequency and extent of insular involvement in middle cerebral artery (MCA) territory infarction and its relationship with stroke severity and cardiac damage are not well established. The purpose of this study is to determine insular involvement in MCA territory infarction and its relationship with clinical and laboratory parameters.
Methods: We analyzed a total of 73 consecutive patients with acute non-lacunar MCA territory stroke proved by MRI scans within 48 hours of stroke onset.
Results: Insular involvement were present in 52 patients (73%); 34 (65%) had major insular lesions and 18 (35%) had minor lesions. The anterior insular alone was involved in 14 (27%) patients, and the posterior insular alone was involved in 4 (7.7%) patients. Among patients with insular involvement, twenty-three patients (44%) had lenticulostriate territory infarction. Insular involvement was associated with larger MCA territory infarction and more severe clinical deficit. Isolated anterior insular infarcts were often accompanied by other infarcts in the superior territory, whereas posterior insular infarcts were often accompanied by inferior division infarction.
Conclusion: The insular involvement is a common in patients with acute non-lacunar MCA territory infarction. Major insular involvement is associated with large MCA territory infarction, proximal MCA occlusion, and greater neurologic severity.
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KEYWORD
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Middle cerebral artery infarction, Insula, MRI
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