Encephalomyelitis Associated With Leukemia in a Child

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Abstract
A case of an encephalomyelitis in a child with acute lymphoblastic leukemia is reported. The patient was a 5-year-old boy who developed seizures, progressive confusion, and coma after radiation and intrathecal methotrexate therapy. Computed tomography (CT) of the brain showed bilateral hypodensities in the posterior parietal and temporal regions. At autopsy, perivascular inflammation, microglial nodules without intranuclear viral inclusions, and bilateral necrosis of the temporoparietal and hippocampal regions were seen in the brain and spinal cord. Paraneoplastic encephalomyelitis is generally recognized in adult patients with underlying malignancy but, to our knowledge, has not been reported in children with leukemia. This report should alert the clinicians to an entity that must be included in the differential diagnosis of leukemic children with progressive neurologic disorder. (J Child Neurol 1987;2:293-297).