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We describe brain CT and MRI characteristics of 10 patients with late onset GM2 gangliosidosis.Cerebellar atrophy,particularly of the vermis,was a prominent feature in all patients with normal-appearing cerebral hemispheres.The severity of these findings did not correlate with the age of onset,disease duration,severity of neurologic impairment,or mode and distribution of the various clinical presentations.In particular,no cerebral abnormality was found by neuroimaging in seven patients with intellectual decline and in six patients with recurrent psychosis,while prominent cerebellar atrophy was present in the only patient who was free of cerebellar signs. |
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