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Transient left temporal lobe lesion in Menkes disease may influence the generation of tonic spasms
Hiromichi Ito1, Kenji Mori, Miho Sakata
1Department of Pediatrics, School of Medicine, University of Tokushima, Japan. michiito@lime.ocn.ne.jp
Abstract:
We report a 7-month-old boy with Menkes disease who presented West syndrome. Magnetic resonance imaging (MRI) revealed atrophy of the frontal and parietal lobes, subdural hematoma on the right side, and left temporal lobe lesion (low intensity in T1-weighted imaging (T1-WI), high intensity in T2-weighted imaging (T2-WI) and low intensity in diffusion-weighted imaging (DW-I)) at 7 months of age. The apparent diffusion coefficient (ADC) was 1.68×10(-3)mm(2)/s in the left temporal lobe lesion and 1.15×10(-3)mm(2)/s on the contralateral side. (1)H-magnetic resonance spectroscopy ((1)H-MRS) revealed a decrease in N-acetylaspartate/(creatine+phosphocreatine) (NAA/Cr) (0.71) and a lactate peak in the left temporal lobe lesion. At 8 months of age, the left temporal lobe lesion disappeared, the ADC of this lesion was within the normal range (1.10×10(-3)mm(2)/s), and (1)H-MRS revealed a slight increase in NAA/Cr (1.12) and disappearance of the lactate peak. We suspected that the transient temporal lobe lesion in Menkes disease was mainly vasogenic edema. Electroencephalography (EEG) revealed left hemisphere dominant hypsarrhythmia and slowing in the left hemisphere. Ictal EEG revealed generalized slow wave burst with P3, T3 spike antecedence and the antecedent spike was consistent with left temporal lobe lesion. After disappearance of the left temporal lobe lesion, tonic spasms disappeared and EEG findings improved. In this case, the clinical course and ictal EEG suggested that epileptic activity from the left temporal lobe lesion may have given rise to tonic spasms.
Insights
This case study details a 7-month-old boy with Menkes disease and West syndrome, highlighting a transient temporal lobe lesion associated with vasogenic edema and epileptic activity. The lesion
Area of Science:
- Pediatric Neurology
- Neuroimaging
- Metabolic Disorders
Background:
- Menkes disease is a rare genetic disorder affecting copper metabolism, often presenting with neurological complications.
- West syndrome, a severe infantile epilepsy, can be associated with various underlying conditions.
Observation:
- A 7-month-old boy with Menkes disease presented with West syndrome and a transient left temporal lobe lesion.
- MRI revealed specific signal intensities and diffusion characteristics, with (1)H-MRS showing decreased N-acetylaspartate and a lactate peak.
- The lesion resolved by 8 months, with normalized MRI findings and spectroscopy.
Findings:
- The transient temporal lobe lesion in this Menkes disease case was likely vasogenic edema.
- Electroencephalography (EEG) indicated left hemisphere hypsarrhythmia and focal epileptic activity correlating with the lesion.
- Resolution of the lesion led to the disappearance of tonic spasms and improved EEG findings.
Implications:
- This case suggests a potential link between transient temporal lobe lesions (vasogenic edema) and epileptic spasms in Menkes disease.
- Neuroimaging and spectroscopy can help characterize these transient lesions.
- Understanding this association may aid in managing neurological manifestations of Menkes disease.
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