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Definition of Moyamoya

Moyamoya: A pattern of progressive obstructive and occlusive cerebral arteritis (inflammation of the cerebral arteries that obstructs and occludes them), predominantly in children and young adults. Symptoms include headaches, behavioral abnormalities, and recurrent attacks of paralysis. The radiology findings are helpful in the diagnosis.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=11712
Last Editorial Review: 6/14/2012

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