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Three young patients developed strokes of rostral midbrain and thalamus shortly following cocaine abuse.Two had infarctions and one had a hemorrhage,but none had clear risk factors other than cocaine for this relatively uncommon type of stroke.Toxicologic analysis confirmed isolated cocaine use in each patient.In the two cases of infarction studied angiographically,one had normal findings and the other had focal narrowing of the P1 segments of the posterior cerebral arteries bilaterally.Since the P1 segment has a uniquely sparse perivascular sympathetic supply,we suggest that direct adrenergic-mediated vasoconstriction is not critical to the production of cocaine-associated stroke. |
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brainstem,infarction of
CAT scan
CAT scan,abnormal
cerebrovascular accident
cocaine
drug abuse
drug abuse,neurologic complications of
hemorrhage,thalamic
intracerebral hemorrhage
midbrain,infarction of
MRI
MRI,abnormal
thalamus,infarction of
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