Abosch suggested that doctors may have identified several problem areas interspersed with essential brain areas in Kon's left temporal lobe, a region that contains areas for speech, memory and emotional processing, and where Kon's seizures were shown to originate from. Kon may have had several chunks from that area removed, leaving the essential areas intact.
But, depending on how much of the brain is affected, there is concern that a patient will develop seizures again in other areas.
"Sometimes, after general anesthetic, people have this honeymoon period where seizures go away. But then they come back," Abosch said.
Patients with these types of recurrences in epilepsy remain a mystery to their doctors, as Carlton Zeigler, 47, said he remains to his doctors.
Zeigler had adolescent onset epilepsy and began treatment with medications, which did not work. He has since had two brain surgeries and one surgery to implant a vagus nerve stimulator to disrupt oncoming seizures. Following each treatment, his seizures become less frequent. But eventually, they return in force.
His surgeries, which were done to remove potential seizure-inducing regions in his right temporal lobe, left Zeigler with memory loss and less emotional control.
"These three surgeries have not managed to control my seizures," Zeigler said. "At this point, my case has [my doctors] completely puzzled. We're doing more testing."