Epileptic Spasms in a Large Hypothalamic Hamartoma Cohort

Area of Science:

• Neurology
• Pediatric Neurology
• Epileptology

Background:

• Hypothalamic hamartoma (HH) is a rare congenital brain malformation.
• Epilepsy is a common comorbidity of HH, with varied seizure types.
• Epileptic spasms are infrequently reported in association with HH.

Observation:

• A retrospective chart review identified 114 patients with HH and epilepsy.
• Only 3 male patients (2.6%) presented with epileptic spasms, typically developing between 6 and 18 months of age.
• Initial treatments for epileptic spasms included prednisolone and vigabatrin, with limited success in one patient.

Findings:

• Laser ablation of the HH was performed in all 3 patients with epileptic spasms.
• Significant seizure burden reduction (84-100%) was observed post-ablation.
• Laser ablation demonstrated efficacy in treating both epileptic spasms and other seizure types associated with HH.

Implications:

• Epileptic spasms, though rare, should be considered in the differential diagnosis of seizures in infants with HH.
• Early intervention with laser ablation of HH may offer a curative approach for medically refractory epileptic spasms and other seizures.
• This study highlights the potential of minimally invasive neurosurgical techniques in managing complex epilepsy syndromes associated with brain malformations.