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[Leukoencephalopathy in childhood leukemia (author's transl)]
Insights
Preventive therapy for childhood leukemia can cause severe leukoencephalopathy, a neurological defect, in some children. Modifications to this mandatory treatment may be necessary to prevent or detect this serious side effect early.
Area of Science:
- Pediatric Oncology
- Neuro-oncology
- Radiation Neurology
Background:
- Acute lymphocytic leukemia (ALL) is a common childhood cancer.
- Central nervous system (CNS) prophylaxis is a standard part of ALL treatment.
- Preventive CNS therapy involves cranial radiation and intrathecal methotrexate.
Observation:
- Three out of thirty children developed severe leukoencephalopathy following CNS prophylaxis.
- Two children experienced major neurological defects despite achieving complete remission.
- Chemotherapy was discontinued in affected children.
Findings:
- Cranial radiation and intrathecal methotrexate can lead to severe leukoencephalopathy.
- Neurological impairment can occur even after successful leukemia treatment.
- The incidence of this severe adverse event warrants further investigation.
Implications:
- The mandatory nature of CNS prophylaxis in ALL requires careful consideration.
- Potential modifications to the current treatment protocol should be explored.
- Developing strategies for early recognition and prevention of neurotoxicity is crucial.
Abstract:
Severe leukoencephalopathy occurred in three of thirty children after preventive central nervous system therapy (24 gray cranial and intrathecal methotrexate) for acute lymphocytic leukemia. Two of these children, in complete remission although chemotherapy was discontinued, have major neurological defects. This preventive therapy remains mandatory but some modifications could be discussed. The mechanism and the possibilities of prevention or of early recognition of this severe neurological impairment are discussed with references to other published cases.