Case of the Week
Section Editors: Matylda Machnowska1 and Anvita Pauranik2
1University of Toronto, Toronto, Ontario, Canada
2BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
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A 6-year-old girl with normal development until new onset of slowly progressive gait difficulty for 6 months. Neurologic examination showed spasticity, hyperreflexia, bilateral Babinsky sign, mild cerebellar ataxia, and abnormal vibration and proprioception. CSF examination (including lactate) normal.