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Brain imaging in late-onset GM₂ gangliosidosis

From the Departments of Neurology (Drs. Streifler and Gadoth) and Radiology (Drs. Gornish and Hadar), Beilinson Medical Center. Petah Tiqva, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

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.

Address correspondence and reprint requests to Dr. Natan Gadoth, Professor of Neurology, Department of Neurology, Beilinson Medical Center, Petah Tiqva 49100, Israel.

Received December 18, 1992. Accepted for publication in final form March 17, 1993.

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