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SURGICAL TREATMENTS FOR EPILEPSY

Thadani, Vijay M.; Taylor, John

CONTINUUM: Lifelong Learning in Neurology: August 2007 - Volume 13 - Issue 4, Epilepsy - p 152-176
doi: 10.1212/01.CON.0000284539.37434.9b
Article

An estimated 250,000 patients in the United States who have medically refractory epilepsy are candidates for epilepsy surgery, but only 2000 surgeries are done each year. If a patient fails trials with two or three antiepileptic drugs, the chances of controlling his or her seizures with medical therapy are quite low, and referral to a specialized epilepsy center is desirable. Patients with focal or secondarily generalized seizures are usually the best candidates for resective surgery, and complete control of seizures can be anticipated in 50% to 70% of patients who undergo a focal resection. Temporal lobectomy has the best outcome and the best-documented improvement in quality of life. Low-grade tumors, vascular lesions, and cortical dysplasias outside the temporal lobes can also be addressed successfully. The key to successful epilepsy surgery is multimodality localization of the seizure focus. Video-EEG recording of seizures with scalp plus or minus intracranial EEG plays a vital role. Advances in imaging technology, including receptor-ligand PET scans, ictal SPECT scans, and magnetic resonance spectroscopy can be used to guide the placement of intracranial EEG electrodes and may someday replace them altogether in identifying the area to be resected. In the future, devices for electrical stimulation, including vagus nerve stimulation and intracranial stimulation, may replace destructive methods, just as they have in the realm of movement disorders.

© 2007 American Academy of Neurology
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