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[A case with mild subdural hematoma presenting with a transient cluster of convulsions--problems concerning
C Nakazawa1, S Tanaka, H Yokoyama
1Department of Pediatrics, National Sendai Hospital.
Insights
This study reports a case of infantile seizures where MRI revealed subdural hematomas, suggesting serial imaging for benign infantile convulsion and epilepsy diagnoses.
Area of Science:
- Pediatric Neurology
- Neuroimaging
- Epileptology
Background:
- Infantile seizures require accurate diagnosis to differentiate benign conditions from those with potential sequelae.
- Electroencephalography (EEG) and computed tomography (CT) are standard initial diagnostic tools.
Observation:
- A 1-month-old infant presented with frequent partial seizures and continuous left central EEG spikes during ictal periods.
- Initial EEG and CT scans were unremarkable for focal signs or abnormalities.
- Magnetic Resonance Imaging (MRI) performed 10 days later revealed subdural hematomas in the left front-temporal and right occipital regions.
Findings:
- The patient's seizures were effectively managed with diazepam and phenobarbital.
- Neurological examination post-seizure and after treatment showed no deficits or sequelae.
- The presence of subdural hematomas on MRI, despite initial normal imaging, is a key finding.
Implications:
- This case highlights the potential for delayed detection of intracranial pathology like subdural hematomas in infants presenting with seizures.
- Serial neuroradiological examinations, particularly MRI, may be crucial for accurate diagnosis in cases initially suspected as benign infantile convulsion or benign complex partial epilepsies.
- Further prospective studies are warranted to establish the role of serial imaging in managing infantile epilepsy syndromes.
Abstract:
A 1-month-old girl showed frequent partial seizures of sudden onset. Continuous spikes were observed in left central area during the ictal period, although interictal EEG showed neither epileptiform discharges nor focal signs. Optimal seizures control was obtained with intravenous administration of diazepam and subsequent oral administration of phenobarbital. She showed neither abnormal physical and neurological signs after seizures nor sequelae. CT examination on two days after the onset of seizures showed no obvious abnormal high density area. However, MRI examination on 10 days after the onset showed subdural hematoma in the left front-temporal area and right occipital area. Except for MRI findings, this case may be diagnosed as benign infantile convulsion or benign complex partial epilepsies in infancy. This case suggested that serial neuroradiological examinations were recommended for prospective studies about benign infantile convulsion and benign complex partial epilepsies in infancy.
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