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Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
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[Clinical and electroencephalogram study of 5 children with hypothalamic hamartoma]
Eiko Otsuka1, Hirokazu Oguni, Makoto Funatsuka
1Departments of Pediatrics, Tokyo Women's Medical University, Tokyo. eitsuru@yahoo.co.jp
Insights
This study examined hypothalamic hamartoma (HH) in children, finding gelastic seizures and precocious puberty as common symptoms. Gamma-knife radiosurgery showed promise for drug-resistant epilepsy associated with HH.
Area of Science:
- Pediatric Neurology
- Neuroimaging
- Epileptology
Context:
- Hypothalamic hamartoma (HH) is a rare congenital brain malformation.
- Understanding HH's clinical, neuroimaging, and EEG features is crucial for diagnosis and management.
Purpose:
- To elucidate the clinical, neuroimaging, and electroencephalogram (EEG) characteristics of hypothalamic hamartoma in children.
- To evaluate treatment outcomes for refractory epilepsy in HH patients.
Summary:
- Retrospective study of 5 children with hypothalamic hamartoma (HH).
- High-resolution MRI revealed intrahypothalamic masses protruding into the 3rd ventricle.
- Common initial symptoms included epileptic attacks and precocious puberty; gelastic seizures occurred in 4/5 patients.
- Ictal EEGs showed diffuse attenuation and rhythmic slow discharges during gelastic seizures.
- Gamma-knife radiosurgery was effective in one of two patients with drug-resistant epilepsy.
Impact:
- Highlights the importance of advanced neuroimaging (MRI) for HH diagnosis.
- Suggests aggressive treatment, including Gamma-knife radiosurgery, for refractory epilepsy in HH.
- Emphasizes considering surgical interventions for patients with deteriorating cognitive and behavioral issues.
Abstract:
We retrospectively studied 5 children with hypothalamic hamartoma (HH) to elucidate the clinical, neuroimaging and electroencephalogram (EEG) characteristics of this disorder. In all cases, high resolution MRI scans demonstrated an intrahypothalamic mass protruding into the 3rd ventricle. An initial symptom was epileptic attack in 4 cases and precocious puberty in the remaining one. Gelastic seizures developed in 4 of 5 patients at ranging from 2 days to 11 years of age. The ictal EEGs during the gelastic seizures showed diffuse attenuation of background activity, followed by rhythmic slow discharges either diffusely or in the central area. Gamma-knife radiosurgery was performed on 2 cases whose seizures were resistant to available antiepileptic drugs. One of the 2 patients was responded significantly to this treatment, showing the disappearance of combined attacks and a marked reduction of the generalized spike-waves discharges. A more aggressive therapy, including gamma-knife radiosurgery and surgical treatment, should be considered for patients whose seizures are resistant to the medical treatment and causing deterioration of intelligence and behavioral problem.
