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Partial Seizures in Two Cases of Metachromatic Leukodystrophy: Electrophysiologic and Neuroradiologic Findings

Division of Child Neurology, National Center Hospital for Mental, Nervous, and Muscular Disorders

Kiyoshi Matsui, MD

Division of Child Neurology, National Center Hospital for Mental, Nervous, and Muscular Disorders

Shigeru Hanaoka, MD

Division of Child Neurology, National Center Hospital for Mental, Nervous, and Muscular Disorders

Norio Sakuragawa, MD

Division of Inherited Metabolic Disease, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan

Toru Kurokawa, MD

Division of Child Neurology, National Center Hospital for Mental, Nervous, and Muscular Disorders

This report concerns two cases of metachromatic leukodystrophy presenting partial seizures. One was a 2-year-old boy with a late infantile type and the other a 17-year-old girl with a juvenile type. The former had tonic-clonic seizures on the left with concomitant twitching of the left side of the face and adversive conjugate deviation of the eyes. After a while, his interictal sleep electroencephalogram (EEG) showed spikes in the right central area. The second case had hemiconvulsions on the right side, consisting mainly of tonic flexion of the upper limb followed by clonic flexions, and accompanied by adversive conjugate deviation of the head and eyes. Her ictal EEG showed rhythmic 6- to 7-Hz wave bursts in the left frontal area. To this date, no report has given a detailed discussion of the type of seizures and ictal EEG in metachromatic leukodystrophy. In addition, there have been few detailed reports of magnetic resonance imaging (MRI) in the juvenile type. It is interesting that typical partial seizures were observed in a hereditary metabolic disorder characterized by diffuse demyelination of the white matter, and the pathophysiology is discussed here mainly in relation to MRI findings of the case with the juvenile type. (J Child Neurol 1992;7:381-386).

Journal of Child Neurology, Vol. 7, No. 4, 381-386 (1992)
DOI: 10.1177/088307389200700409


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