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MAGNETIC RESONANCE IMAGING OF INTRACRANIAL MALFORMATIONS IN DOGS AND CATS

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Address correspondence and reprint requests to Dr. Edward MacKillop, at the above address. E-mail: emackillop@pvs-ec.com

Abstract

Intracranial malformations may occur because of an inherent developmental defect or secondary to in utero injury to the brain with subsequent hypoplasia and atrophy. They can cause neurologic deficits in growing animals, although some anomalies may not produce clinical signs until adulthood. Malformations of the brain include hydrocephalus, hydranencephaly/porencephaly, holoprosencephaly, corpus callosum agenesis/dysgenesis, lissencephaly, polymicrogyria, meningoencephalocele, intracranial cysts, cerebellar malformations, and hamartomas. These conditions are defined and reviewed with an emphasis on their features in magnetic resonance images.

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