Progression of Pre-existing Chiari Type I Malformation Secondary to Cerebellar Hemorrhage

A previously healthy 32-year-old man was surgically treated under a diagnosis of right subcortical hematoma. Magnetic resonance imaging incidentally demonstrated tonsillar herniation. Thirty-two months later, he was readmitted with complaints of occipital, neck, and shoulder pain as well as cerebell...

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Published inNeurologia medico-chirurgica Vol. 49; no. 2; pp. 90 - 92
Main Authors Atsuhiro KOJIMA, Keita MAYANAGI, Shunichi OKUI
Format Journal Article
LanguageEnglish
Japanese
Published THE JAPAN NEUROSURGICAL SOCIETY 01.02.2009
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Summary:A previously healthy 32-year-old man was surgically treated under a diagnosis of right subcortical hematoma. Magnetic resonance imaging incidentally demonstrated tonsillar herniation. Thirty-two months later, he was readmitted with complaints of occipital, neck, and shoulder pain as well as cerebellar ataxia. Subsequent magnetic resonance imaging demonstrated cerebellar hemorrhage and progression in the downward herniation of the tonsils. Conservative treatment resulted in spontaneous disappearance of the cerebellar hematoma, and the clinical signs and radiological findings improved. Patients with Chiari type I malformation require neuroimaging follow up because the downward herniation of the tonsils can progress in association with subsequent pathophysiological disorders.
ISSN:0470-8105
DOI:10.2176/nmc.49.90