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Extrinsic infratentorial lesion causing ataxic hemiparesis--a new localization
P K Gupta1, A Anjaneyulu, R Borgohain
1Department of Neurosurgery, Nizam's Institute of Medical Sciences, Hyderabad, India.
Journal of the Neurological Sciences
|September 1, 1994
Summary
This case report details an 18-year-old woman with progressive left limb weakness. An unusual epidermoid tumor caused ataxic hemiparesis, a rare neurological finding.
Area of Science:
- Neurology
- Neurosurgery
- Radiology
Background:
- Ataxic hemiparesis is typically associated with intrinsic brain lesions.
- Epidermoid tumors are congenital tumors that can occur in various locations.
Observation:
- An 18-year-old woman presented with progressive left-sided limb dysfunction starting at age 13.
- Clinical examination revealed ataxic hemiparesis affecting the left side.
- Brain CT identified a non-enhancing hypodense lesion in the cerebellopontine angle with supratentorial extension, suggestive of an epidermoid tumor.
Findings:
- The patient's ataxic hemiparesis was linked to an epidermoid tumor located in the cerebellopontine angle.
- This represents an unusual clinical localization for ataxic hemiparesis, with prior reports predominantly linking it to intrinsic brain lesions.
Implications:
- This case highlights the importance of considering extrinsic lesions, such as epidermoid tumors, in the differential diagnosis of ataxic hemiparesis.
- Understanding rare tumor localizations can improve diagnostic accuracy and patient outcomes in neuro-oncology.
