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Cavernous malformation of the optic chiasm : case report.
Dong Wuk Son1, Sang Weon Lee, Chang Hwa Choi
1Department of Neurosurgery, Pusan National University, School of Medicine, Busan, Korea.
Journal of Korean Neurosurgical Society
|December 20, 2008
Summary
Cavernous malformations (CMs) affecting the optic chiasm are rare. This case details a patient with CMs experiencing
Area of Science:
- Neuro-ophthalmology
- Neurosurgery
- Vascular Neurology
Background:
- Optic nerve and chiasm cavernous malformations (CMs) are exceptionally uncommon vascular anomalies.
- These lesions can present with sudden neurological deficits, mimicking 'chiasmal apoplexy'.
Observation:
- A 39-year-old woman presented with acute bitemporal hemianopsia and headache.
- Magnetic resonance imaging (MRI) indicated a hemorrhage within a vascular malformation at the optic chiasm.
Findings:
- Surgical exploration via pterional craniotomy confirmed an intrachiasmatic cavernous malformation with active hemorrhage.
- Complete surgical excision of the lesion was achieved.
Implications:
- Despite successful resection, the patient's pre-existing visual field deficits persisted post-operatively.
- This case underscores the challenges in managing optic chiasm cavernous malformations and the potential for persistent visual sequelae.
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