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  • Title: [A case of juvenile onset ataxia with dystonia, myoclonus, sensorineural hearing loss and mental retardation].
    Author: Koide R, Yoshimura N, Soma Y, Tsuji S.
    Journal: Rinsho Shinkeigaku; 1993 Aug; 33(8):909-11. PubMed ID: 8261707.
    Abstract:
    A 35-year-old female was reported who presented early onset and slowly progressive ataxia and retrocollis which appeared at the age of nine. On admission, neurological examination revealed cerebellar ataxia, dystonia of the neck and the right arm, myoclonus of the neck and the shoulder, slight mental retardation, supranuclear upper gaze palsy, and sensorineural hearing loss. Laboratory examination showed high serum CK activity. Electromyography and muscle biopsy findings suggested slight muscular involvement. CSF level of HVA and 5-HIAA were reduced. MRI demonstrated marked cerebellar atrophy and slight atrophy of the brain stem. To our knowledge, the characteristic combination of the neurological sign in this case has not been reported. This case was compared with EOCA (early onset cerebellar ataxia with retained tendon reflexes) and other juvenile onset cerebellar ataxia and dystonia.
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