At 30 years, 14 of the 48 study participants were free of seizures and taking no epilepsy drugs; 10 people were free of seizures while taking epilepsy medication.

"Few studies have looked at the long-term prognosis for epilepsy surgery," said neurologist and study author William H. Theodore, MD, of the National Institute of Neurological Disorders and Stroke in Bethesda, Md.

"We found that 50 percent of the patients were free of seizures 30 years after the surgery," he added.

Temporal Lobectomy

In epilepsy, surgery generally is considered for those whose seizures do not respond to medication. The study involved people who had a temporal lobectomy, which is the surgical removal of the portion of the brain where seizures most often occur.

The study examined 48 people who had a temporal lobectomy at the National Institutes of Health in Bethesda an average of nearly 30 years previously. The patients or their families were questioned about whether they had experienced seizures at one year after the surgery, and at five, 10, and 30 years after the surgery.

Good Prognosis

At 30 years, 14 people were free of seizures and taking no epilepsy drugs; 10 people were free of seizures while taking epilepsy medication. Those who had seizures within the first year after surgery were least likely to be free of seizures in the future.

“These results suggest a good prognosis for long-term seizure control after temporal lobectomy,” Theodore said.

The American Academy of Neurology, an association of more than 18,000 neurologists and neuroscience professionals, is dedicated to improving patient care through education and research.

A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system, such as Alzheimer’s disease, epilepsy, Parkinson’s disease, multiple sclerosis and stroke.