Pathology of surgically remediable epilepsy: How to evaluate.

Area of Science:

• Neurology
• Neurosurgery
• Pathology

Background:

• Epilepsy surgery is a key treatment for medically refractory epilepsy.
• Neuroimaging advances improve the identification of surgically treatable lesions.
• Hippocampal sclerosis is the most frequent pathology in epilepsy surgery specimens.

Purpose of the Study:

• To review the neuropathological aspects of common causes of drug-resistant epilepsy.
• To highlight the importance of accurate lesion classification for defining etiologies.
• To emphasize the role of neuropathology in guiding epilepsy surgery.

Main Methods:

• Review of neuropathological findings in epilepsy surgery cases.
• Discussion of common pathologies including malformations of cortical development, neoplasms, vascular malformations, and inflammatory conditions.
• Emphasis on the necessity of proper specimen handling for microscopic evaluation.

Main Results:

• Hippocampal sclerosis is the most common finding.
• Focal cortical dysplasia, neoplasms, vascular malformations, Rasmussen encephalitis, and glial scars are other significant pathologies.
• Accurate neuropathological interpretation is vital for clinical management.

Conclusions:

• Neuropathology is essential for understanding and managing drug-resistant epilepsies.
• Identifying specific lesions through neuropathology guides surgical decisions.
• Advances in diagnosis and pathology improve surgical outcomes for epilepsy patients.