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Immunosuppressive measles encephalitis
R E Chen1, D A Ramsay, L L deVeber
1Department of Clinical Neurological Sciences, Victoria Hospital, London, Ontario, Canada.
Abstract:
A case of immunosuppressive measles (rubeola) encephalitis in a 12-year-old boy in remission from acute lymphoblastic leukemia is described. The patient presented with focal seizures which led to epilepsia partialis continua and then progressive obtundation. Magnetic resonance imaging revealed focal abnormalities, predominantly in the cortex, that on light and electron microscopic examination were demonstrated to be highly localized areas of neuronal loss, gliosis, and secondary Wallerian degeneration with paramyxovirus inclusions in the oligodendrocytes and surviving neurons.
Insights
This case study describes immunosuppressive measles (rubeola) encephalitis in a boy with leukemia. Measles encephalitis can cause severe neurological symptoms, even in immunocompromised patients in remission.
Area of Science:
- Neurology
- Immunology
- Pediatrics
Background:
- Measles (rubeola) is a highly contagious viral illness.
- Immunosuppression, often due to leukemia treatment, can alter disease presentation.
- Measles encephalitis is a rare but serious complication of measles infection.
Observation:
- A 12-year-old boy in remission from acute lymphoblastic leukemia developed measles encephalitis.
- The patient presented with focal seizures, progressing to epilepsia partialis continua and obtundation.
- Neurological examination revealed focal cortical abnormalities.
Findings:
- Magnetic resonance imaging (MRI) showed focal cortical abnormalities.
- Microscopic examination identified neuronal loss, gliosis, and Wallerian degeneration.
- Paramyxovirus inclusions were found in oligodendrocytes and neurons, confirming measles infection.
Implications:
- This case highlights the risk of severe measles encephalitis in immunocompromised children, even during remission.
- Early recognition and diagnosis are crucial for managing measles encephalitis in susceptible populations.
- Understanding the neuropathological features is vital for developing targeted treatments.