Emma Kon, 25, made news in the United Kingdom after doctors performed multiple surgeries to remove seven parts of her brain in an effort to treat an epileptic condition which crippled her with up to 100 seizures each day.
Now, about nine months after her treatments, Kon told the U.K.'s Daily Mail that she has had no seizures and is feeling well.
While epilepsy experts say that complications from brain surgery usually occur immediately after the operation and that reduced seizure activity is a good sign that a person is in recovery, side effects of drastic brain surgery can arise unexpectedly.
And epilepsy, a disease that affects about three million people in the United States, can be a wily disease that may return without warning in a different part of the brain.
Brain surgery can be a common and successful way to treat some forms of epilepsy.
"Some epilepsies are amenable to surgery and some are not," said Dr. Emad Eskandar, director of functional neurosurgery at Massachusetts General Hospital in Boston. "If we can pinpoint the source of epilepsy to one or two foci in a relatively safe area of the brain, there is a good chance of curing or significantly reducing the number of seizures with surgery."
Eskandar said the success rate of surgery to remove a portion of the brain -- and about half of patients with epilepsy have problem areas in the temporal lobes, in the center of the brain -- is about 80 percent, and patients show a reduced rate of seizures.
And removing even a significant chunk of nonessential brain tissue -- those parts responsible for bodily functions, which we could not live without -- may have no outward effect on how the patient thinks or behaves post-surgery.
"Are they neurologically OK? Yes," Eskandar said. "If a part of the brain is the seizure's focus, that means it's not working properly anyway. Either the person has a mild deficit that they have already adapted to or over time the function of that area has moved to another part of the brain."
Despite the relative success of surgery for epilepsy, patients are sometimes left with distinct holes in their thinking, reasoning or memory post-surgery.
Jim Barron, 64, from Sharon, Mass., had surgery to remove a brain tumor that was causing seizures during which he would smell bad odors, see colors more intensely and experience deja vu. After being treated at the National Institutes of Health in 1964, Barron said he no longer had seizures unless he was over-stimulated by illness or intense emotions, such as his divorce.
"It really solved the problem," said Barron, and reported that he had only had five seizures in the past 30 years, compared to up to 30 per day at his worst, pre-surgery.
But the operation affected parts of his memory, especially his short-term memory.
"Everybody thinks you're perfectly OK and then you're caught on a cliff," Barron said. "I come to a point in my thoughts and stop because there's nothing there."
It is unclear whether Kon had surgery to remove an area of brain with seven regions in it, such as a hippocampus, amygdala, areas responsible for memory or speech, or if seven distinct regions were removed, the latter being rare.
"It's unusual for us to go after multifocal epilepsy with [surgery]," said Dr. Aviva Abosch, director of epilepsy surgery at the University of Minnesota Medical Center in Minneapolis.