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Optic tract injury after anterior temporal lobectomy
D R Anderson1, J D Trobe, T W Hood
1W.K. Kellogg Eye Center, University of Michigan Medical Center, Department of Ophthalmology, Ann Arbor 48105.
Ophthalmology
|July 1, 1989
Summary
Anterior temporal lobectomy for epilepsy may cause optic tract infarction, leading to homonymous hemianopia. This rare complication, distinct from compressive syndromes, is linked to anterior choroidal artery vasospasm.
Area of Science:
- Neurology
- Neurosurgery
- Ophthalmology
Background:
- Anterior temporal lobectomy is a surgical treatment for intractable epilepsy.
- Optic tract injuries can cause visual field defects, specifically homonymous hemianopia.
Observation:
- Three patients developed complete homonymous hemianopia post-anterior temporal lobectomy.
- Clinical and neuroimaging findings indicated ipsilateral optic tract infarction.
Findings:
- The optic tract infarction was presumed to result from irritative vasospasm of the anterior choroidal artery.
- This presentation constitutes a pure optic tract syndrome.
Implications:
- Distinguishing this syndrome from compressive optic tract syndrome is crucial for accurate diagnosis and management.
- Understanding this complication can inform surgical techniques and patient monitoring after temporal lobectomy.