• A 56-year-old woman had a 50-year history of childhood-onset chorea without progressive neurologic deficit. The patient's father had a lifelong extrapyramidal disorder characterized by a head-nodding tremor and involuntary movements especially evident with anxiety. The computerized tomographic scan was normal, without evidence of cortical or caudate atrophy. The computerized tomographic scan supports the notion of a functional rather than a structural lesion, and may aid in the discrimination of hereditary nonprogressive chorea from more devastating forms of hereditary chorea.
Rice E, Terrence C. Computerized Tomography in Hereditary Nonprogressive Chorea. Arch Neurol. 1979;36(4):249–250. doi:10.1001/archneur.1979.00500400103021
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