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Dysarthria was associated with a classic lacunar stroke syndrome in 52.9% of patients. Isolated dysarthria and dysarthria-central facial and lingual paresis occurred in 2.9% (n = 2) and 10.3% (n = 7), respectively. Dystarthria-clumsy hand syndrome was observed in 11.7% (n = 8) of patients and associated with pure motor hemiparesis and/or ataxic hemiparesis in 27.9% (n = 19). The lesions were due to small-vessel disease in 52.9% (n = 36), to cardioembolism in 11.8% (n = 8), and to large ve ssel disease in only 4.4% (n = 3) of cases. Infarction were located in the lower part of the primary motor cortex (5.9%; n = 4), middle part of the centrum semiovale (23.5%; n = 16), genu and ventral part of the dorsal segment of the internal capsule (8. 8%; n = 6), cerebral peduncle (1.5%; n = 1), base of the pons (30.9%; n = 21), and ventral pontomedullary junction (1.5%; n = 1). Isolated cerebellar infarctions affected the rostral paravermal region in the superior cerebellar artery territory. Extrace rebellar infarcts causing dysarthria were located in all patients along the course of the pyramidal tract. This finding correlates with the frequent occurrence of associated pyramidal tract signs in 90.7% (n = 62) of patients. Isolated cerebellar infarc ts leading to dysarthria were in all cases located in the territory of the superior cerebellar artery. |
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brainstem,infarction of CAT scan,abnormal cerebellar infarction cerebral embolism cerebral embolism,cardiac origin cerebral infarction cerebrovascular accident cerebrovascular accident,vascular territory involved dysarthria lacunar infarction MRI,abnormal pure dysarthria pyramidal tract dysfunction superior cerebellar artery infarction
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