Boy Receives Pioneering Surgery to Stop Child's Daily Seizures

Today, Owen Turner struggles to pick up a Cheerio or throw a football with his right hand. 

But other than that it would be hard to notice a difference in him and any other 5-year-old boy after becoming the first child at Cook Children's to undergo a trailblazing endoscopic epilepsy surgery.

Owen’s story begins at 8 months of age when his parents notice weakness on his right side. His parents know something isn't right with their son and they make an appointment for Monday with their pediatrician. But over the weekend they become afraid when they see Owen has stopped using the right side of his body.

His parents rush Owen to the nearest emergency room in Cleburne, Texas. From there, he's airlifted to Cook Children’s by CareFlight.

His initial scans show a large stroke in the left side of his brain which is soon discovered to be related to a new diagnosis of acute myeloid leukemia. He endures four phases of chemotherapy and fortunately enters remission where he remains today. While his stroke left him with right-sided weakness requiring ongoing aggressive therapy, it's his seizures that prove to be the most debilitating obstacle to overcome.

“We were so fortunate,” Allison Turner, Owen’s mom, said. “That's the day we met (Kenneth Heym, M.D.), who would become Owen’s oncologist. He happened to be on call that weekend. He met us there. He told us at that point, our kid was one of the sickest in the hospital. If we had waited to bring him in until the next day, Owen may not have made it.”

Owen’s first seizures occur in the days following the stroke, but they are controlled with medication. He’s even able to stop taking medication shortly after his initial diagnosis, but the seizures returned around age 3. His parents describe his seizures as periods of suddenly pausing in activity with a decreased response to them and sometimes unprovoked laughter. Other events are described as a sudden fall to the ground or stiffening and shaking of his arms and legs posing a significant risk of injury. Despite trials of at least six different medications – nothing helps his daily seizures.

His neurologist at Cook Children’s, Howard Kelfer, M.D., refers Owen to the Cook Children's Justin Comprehensive Epilepsy Program for epilepsy surgery evaluation. Once Cynthia Keator, M.D., took over his case, she begins a workup to determine where in the brain his seizures were arising, understanding the likelihood of seizure control with medications is minimal. Owen’s evaluation in the EMU (epilepsy monitoring unit) captures many seizures starting from the left hemisphere. Additional evaluation with a MEG (magnetoencephalogram) scan shows multiple areas of abnormal electrical activity throughout the left hemisphere both in front and behind the region of his prior stroke.

Given that his seizures arise from such a large area of Owen's brain, the epilepsy team feels his best chance of seizure freedom is to disconnect the left side of his brain from the right by cutting the fibers (corpus callosum) that connects the two sides of the brain.

One traditional approach to this type of surgery is corpus callosotomy, which often involves a large incision on the patient’s skin, opening a large hole in the skull, and then cutting the corpus callosum in half. While considered by many to be the “gold standard” with good seizure control rates, after-surgery care involves a lengthy recovery in the hospital and then at home. While Owen’s family wants better seizure control, they’re reasonably hesitant to undertake such an invasive surgery.

Fortunately, Cook Children’s neurosurgeon, Daniel Hansen, M.D., is one of only a few pediatric neurosurgeons in the United States who has experience doing similar procedures, using less invasive endoscopic techniques. Endoscopes (small video cameras with channels for operating tools) allow the surgeon to perform surgery through much smaller openings in the skull. When successful, this means a smaller incision, less surgical blood loss, quicker operating time, shorter hospital recovery, and the same chance of seizure freedom post-operatively as if undergoing a more traditional open surgery.

Owen’s family understood that endoscopic epilepsy surgery is the leading edge of advancement and their child would be the first such surgery at Cook Children’s, and one of only a few in the country that have been reported.

“Giving their consent and placing trust in our team, we went forward with surgery,” Dr. Hansen said. “The operation itself went well. We were able to completely disconnect the two hemispheres of the child’s brain using a bony opening not much larger than an inch square, and his recovery in the hospital was quick.”

“After everything we’ve been through, I don’t know if you ever say you are comfortable. I guess we’ll always be on guard,” Allison said. “But we’re a little more relaxed now. Before the surgery, we never knew when a seizure would come on. Owen couldn’t go outside and play without one of us with him.”

Owen is now 9 months out of surgery and the family has noticed no seizures since. He’s an active young boy who is making steady strides in kindergarten now that his uncontrolled seizures have stopped. While it remains too early to speak to years of seizure control, doctors say this is an encouraging start.

Given the successful outcome with Owen, Cook Children’s has since performed two additional procedures with similar favorable results. The Epilepsy team hopes to expand the number of children who are candidates for this type of surgery in the future. Such children will have medically refractory epilepsy and will have undergone a thorough evaluation by the team at Cook Children’s. Potential surgeries that can be performed endoscopically include complex surgeries including corpus callosotomy, single lobe disconnections, focal lesion resection, and functional hemispherectomy. As the team’s experience grows with this technology and technique, its use may expand beyond this short list.

And in the process changing more lives for the better.

“It has been such a relief for us. It was a huge decision to disconnect his brain. Just saying those words … But this was the best thing for him,” Allison said. “He has flourished. He’s made improvements by leaps and bounds. Just the progress in everything. His speech, school work, everything. His whole body is functioning with just the use of one side of his brain. He can’t throw a football with his right hand and he has problems with his fingers on his right hand. He can’t pick up a Cheerio with his right hand. But other than that, I don’t know if anyone would notice a difference in him and any other child.”