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Balamuthia amebic meningoencephalitis and mycotic aneurysms in an infant

Clare P Hill1, Omprakash Damodaran, Peter Walsh

  • 1Department of Neurology, Princess Margaret Hospital, Subiaco, Western Australia, Australia.

Pediatric Neurology
|July 5, 2011
PubMed

Insights

Balamuthia amebic encephalitis is rare in infants. This case highlights a Balamuthia mandrillaris infection in an 8-month-old, complicated by a middle cerebral artery mycotic aneurysm.

Area of Science:

  • Medical Microbiology
  • Pediatric Neurology
  • Infectious Diseases

Background:

  • Balamuthia amebic encephalitis (BAE) is a severe, often fatal, central nervous system infection.
  • BAE is exceptionally rare in infants, with limited documented cases.
  • Mycotic aneurysms are uncommon complications of central nervous system infections.

Observation:

  • An 8-month-old infant presented with symptoms indicative of meningoencephalitis.
  • Laboratory confirmation identified Balamuthia mandrillaris as the causative agent.
  • The infant developed a mycotic aneurysm of the middle cerebral artery.

Findings:

  • This case represents one of the few documented instances of Balamuthia mandrillaris meningoencephalitis in an infant.
  • The complication of a mycotic aneurysm in BAE has been described only once previously.
  • The successful diagnosis and management of BAE with mycotic aneurysm in an infant is detailed.

Implications:

  • This case underscores the importance of considering Balamuthia mandrillaris in the differential diagnosis of infant meningoencephalitis, even with rare complications.
  • Early recognition and aggressive treatment are crucial for improving outcomes in Balamuthia infections.
  • Further research is needed to understand the pathogenesis and optimize treatment strategies for BAE, particularly in pediatric populations.

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