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  • Title: [Current Position of Callosotomy].
    Author: Ono T.
    Journal: No Shinkei Geka; 2023 Jan; 51(1):115-125. PubMed ID: 36682756.
    Abstract:
    Callosotomy is widely used today as a treatment option for medically refractory epilepsy in patients with generalized or unknown-onset seizures. Other surgical indications include bilaterally distributed, most often synchronous, epileptiform discharges on EEG and some epilepsy syndromes, including Lennox-Gastaut syndrome and infantile spasms/West syndrome. Patients with drop attacks, mainly caused by epileptic spasms or atonic seizures, are most likely to benefit from this procedure. A more favorable seizure outcome was observed after a one-stage total callosal section in pediatric patients. For older children and adults, anterior callosotomy should initially be applied, and staged complete sections should be considered if the seizure outcome is insufficient. In terms of complications, most surgically associated brain and vascular injuries are avoidable in this era of microsurgery, and some less invasive newer methods, including endoscopic and stereotactic methods, are being explored. Disconnection syndrome is an unavoidable condition. However, it is usually transient in most cases and does not outweigh the improvement in symptoms of epilepsy in most patients, particularly in children who have compensatory functions or plasticity of the developing brain.
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