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Mild encephalopathy with splenial lesion and parainfluenza virus infection

Lea Abenhaim Halpern1, Philipp Agyeman, Maja Steinlin

  • 1Department of Neuropaediatrics, Development and Rehabilitation, University Children's Hospital, Berne, Switzerland.

Pediatric Neurology
|February 20, 2013
PubMed

Insights

This study details a rare case of mild encephalopathy with reversible splenial lesions (MERS) in a child infected with parainfluenza virus. It highlights a new viral association for MERS, expanding understanding of this neurological condition.

Area of Science:

  • Neurology
  • Virology
  • Pediatrics

Background:

  • Mild encephalopathy with reversible splenial lesions (MERS) is typically linked to influenza A and B virus infections.
  • Patients usually experience neurological symptoms post-viral prodrome and recover quickly.
  • Characteristic MRI findings include reversible splenial lesions in the corpus callosum.

Observation:

  • A 5-year-old boy presented with seizures and reduced consciousness following a 2-day fever and cough.
  • MRI revealed cytotoxic edema and diffusion restriction in the corpus callosum and periventricular white matter.
  • Parainfluenza virus types 1-3 infection was confirmed via nasopharyngeal swab, though CSF PCR was negative.

Findings:

  • This case represents the first documented instance of MERS associated with parainfluenza virus infection.
  • The findings expand the spectrum of viruses implicated in MERS.
  • The study underscores the importance of considering parainfluenza in MERS differential diagnoses.

Implications:

  • The exact pathogenesis of MERS remains to be elucidated.
  • Further research is needed to understand the mechanisms behind MERS brain lesions.
  • This case broadens the etiological understanding of MERS, aiding in diagnosis and management.

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