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  • Groundbreaking Laser...

Groundbreaking Laser Hemispherectomy performed on Child with Epilepsy

Written By : Hina Zahid |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2021-06-28T09:15:10+05:30  |  Updated On 28 Jun 2021 12:03 PM IST
Groundbreaking Laser Hemispherectomy performed on Child with Epilepsy
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For only the second time in the world, doctors at the University of Chicago Medicine Comer Children's Hospital and the Department of Neurosurgery used a minimally invasive surgery to disconnect the right and left sides of the brain and the left epilepsy-generating zones of a boy with epilepsy, stopping his seizures.

Neurosurgeon Peter Warnke, MD, performed the 8-hour laser functional hemispherectomy surgery in February 2021. The patient, 11-year-old Zachary Kurek from northwest Indiana, suffered a stroke at birth, causing him to lose most of the function of the left side of his brain. His epilepsy was getting worse as he got older, causing dozens of seizures a day that medication couldn't control.

Anything startling, such as a loud noise or a barking dog, could trigger a seizure, causing his body to lock up and fall. He suffered countless bad bruises, a few broken bones and teeth, embarrassment, stress and the inability to do many normal activities. His mother said he was becoming depressed, angry and unable to sleep.

With Zachary facing a lifetime of these seizures and with very limited function in his left cerebral hemisphere as a result of the stroke, Warnke and his team studied the boy's case. They determined that they could completely disconnect the right and left sides of his brain, and separate any epileptogenic tissue in the left hemisphere, without worsening his verbal or physical functioning.

That way, if seizure activity occurred in the left side of his brain, it would be unable to send signals to the right side of the brain or to the fibers that transmit seizure activity, and Zachary's body wouldn't react. The neurosurgery team used sophisticated imaging of his brain's fiber connections that would need to be disconnected by lasers.

A laser hemispherectomy is a highly complex, risky and challenging operation to help people with epilepsy. UChicago Medicine, which is a Level IV Pediatric Epilepsy Center, has performed about 250 laser surgeries, Warnke estimated.

But to completely disconnect a whole hemisphere with implanted laser fibers was a new challenge. Rather than remove a portion of the skull to access the brain, as traditionally done in a procedure called a callosotomy, Warnke and his team drew on their previous research, which they were first to publish, suggesting that interstitial lasers could be used to disconnect the two hemispheres of the brain.

"If we could replace open surgery with this, that would be a major breakthrough," said Warnke, UChicago Medicine's Director of Stereotactic and Functional Neurosurgery. "We've entered uncharted territory, but added a new level of safety as the surgery is carried out in the MRI scanner. It provides continuous vision and real-time monitoring of the brain temperature and imaging of the cell damage produced."

Not only have the seizures stopped, but his whole attitude has changed. He's optimistic and happy now.

Since the surgery, Zachary hasn't had a single seizure, his parents said. Warnke described his progress as "remarkable."

"Where we're at now is amazing," said his mother Amanda Morey. "Not only have the seizures stopped, but his whole attitude has changed. He's optimistic and happy now."

Warnke performed the surgery using an MRI-guided Visualase laser ablation system. Five small holes about the size of coffee stirrers were drilled into Zachary's head and catheters were inserted. Five laser fibers were inserted into those catheters and moved deep into Zachary's brain. Constant guidance from an MRI, providing the exact location and temperature of the laser fibers every seven seconds, allowed Warnke to use the laser's heated tip to ablate and seal off the connections between the two brain hemispheres.

In the future, laser epilepsy surgery at Comer Children's will be done using a new state-of-the-art robot purchased in March 2021. The robot will be able to insert the laser fibers in the brain with greater speed and precision, shortening the surgery time.

Julia Henry, MD, Zachary's neurologist and epileptologist, said UChicago Medicine treats more children for seizures than any other hospital in the Chicago area and recently added some new epilepsy specialists to the team.

Zachary's case was discussed by a team of doctors with a wealth of experience and knowledge. When medications weren't working, Henry told Zachary's mother about different surgical treatment options available to him. He then underwent additional EEG evaluation and specialized imaging, which concluded that he'd be a good candidate for a hemispherectomy. With the family's consent, Henry then brought Zachary's case to the Epilepsy Surgery Conference for review. That's where Warnke proposed doing the surgery with a new laser technique.

Henry encourages parents whose children are not having success with seizure medications to talk to their doctors about surgical options. While a laser hemispherectomy might not be appropriate for every patient with epilepsy, Henry said the risk of death is less than 1%, and between 73% and 83% of children have their seizures cured by surgery.

"This surgery is a big and scary procedure. Disconnecting half my child's brain? That's a lot for any parent to process. But the results can be so dramatic," Henry said. "The kids come to us so impaired. They have bad, frequent seizures. Life is really a struggle. There are a lot of patients who might be good candidates for this, and this minimally invasive approach might open up the option for them."

Zachary remains on anti-seizure medication for now because it's still possible he could have a seizure. But he's relishing his improved quality of life and plans to return to school in the fall. He may even get to participate in gym and recess, something that had been nearly impossible until now.

Mother and son were getting out of the car recently when a wind gust suddenly slammed the car door shut. Instinctively, Zachary braced himself for a seizure but then realized nothing was happening. He looked at his mom and smiled, and said, "Oh yeah! I don't have seizures anymore!"

"There was so much that he went through, and I was very hesitant to do this surgery at first. I kept thinking about all the 'what ifs'," Amanda said. "Knowing what I know now, I wouldn't have hesitated, and I wouldn't have waited this long. It worked out perfectly for him."


groundbreaking laser hemispherectomyepilepsyseizurescerebral hemispheremri scannerbrain surgery
Hina Zahid
Hina Zahid

    Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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