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Mesial temporal sclerosis associated with methotrexate-induced leukoencephalopathy.
Kouhei Hamamoto1, Noboru Oriuchi, Takashi Kanazawa
1Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
Pediatric Neurology
|March 24, 2009
Summary
Mesial temporal sclerosis, a common epilepsy cause, rarely occurs with acute lymphoblastic leukemia. This case suggests methotrexate neurotoxicity may contribute to its development in leukemia patients.
Area of Science:
- Neurology
- Pediatric Oncology
- Neuroimaging
Background:
- Mesial temporal sclerosis is a frequent cause of epilepsy in children.
- Acute lymphoblastic leukemia (ALL) is a rare comorbidity with epilepsy.
- Methotrexate is a common chemotherapy agent used in ALL treatment.
Observation:
- A 13-year-old patient with ALL developed seizures post-leukoencephalopathy.
- Neuroimaging showed hippocampal abnormalities indicative of mesial temporal sclerosis.
- This is the first reported instance of mesial temporal sclerosis in ALL with methotrexate-induced leukoencephalopathy.
Findings:
- The patient's condition suggests a link between methotrexate neurotoxicity and mesial temporal sclerosis.
- Hippocampal abnormalities were observed in the patient, consistent with mesial temporal sclerosis.
- This case highlights a potential, previously unreported association.
Implications:
- Methotrexate-induced neurotoxicity may play a role in the pathogenesis of mesial temporal sclerosis.
- This finding could influence epilepsy management in pediatric ALL patients.
- Further research is warranted to explore this association and its mechanisms.
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