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J Child Neurol. 2002 Jan;17(1):47-9.

Diffuse magnetic resonance imaging white-matter changes in a 15-year-old boy with mitochondrial encephalomyopathy.

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Department of Neurology, Children's Hospital of Buffalo, State University of New York at Buffalo, 14222, USA.


We report a 15-year-old boy who presented with recurrent headaches associated with numbness, confusion, and speech difficulty. Brain magnetic resonance imaging (MRI) revealed diffuse bilateral white-matter hyperintensity on fluid-attenuated inversion-recovery and T2-weighted images in the internal capsule, periventricular and subcortical white matter, base of the pons, and middle cerebellar peduncles. Lesions were isointense on T1-weighted images and nonenhancing. Muscle biopsy showed changes consistent with a mitochondrial myopathy. Mitochondrial respiratory chain enzyme activity analysis revealed a significant reduction in complex II activity. Genetic testing was negative. We conclude that mitochondrial encephalomyopathy may present with unusual diffuse supratentorial and infratentorial white-matter changes on MRI.

[Indexed for MEDLINE]

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