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Putaminal cavernous angioma presenting with hemichorea.

Berril Donmez¹, Raif Cakmur, Utku Uysal

¹Department of Neurology, Dokuz Eylül University, Medical School, Izmir, Turkey.

Movement Disorders : Official Journal of the Movement Disorder Society

|September 25, 2004

Summary

A man experienced right-sided hemichorea due to a left putaminal cavernoma. This case is the first documented instance of hemichorea caused by a contralateral putaminal cavernous angioma.

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Area of Science:

Neurology
Neuroimaging
Vascular Neurology

Background:

Hemichorea is a rare hyperkinetic movement disorder.
Cavernous angiomas are low-flow vascular malformations that can occur in the brain.
Putaminal cavernomas are a specific subtype, often associated with hemorrhage.

Observation:

A 63-year-old male presented with new-onset right-sided hemichorea.
Magnetic resonance imaging (MRI) identified a cavernous angioma within the left putamen.
No other neurological abnormalities or lesions were detected.

Findings:

The patient's hemichorea was directly attributed to the left putaminal cavernoma.
This represents the first reported case of hemichorea caused by a contralateral putaminal cavernous angioma.

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The findings suggest a potential for contralateral effects from focal brain lesions.

Implications:

This case expands the understanding of the clinical manifestations of putaminal cavernous angiomas.
It highlights the importance of considering contralateral lesions in the etiology of movement disorders.
Further research may elucidate the precise mechanisms linking contralateral cavernomas to hemichorea.