Balamuthia Mandrillaris Central Nervous System Vasculitis in an Immunocompetent Child: Case Report.

Balamuthia mandrillaris granulomatous amebic encephalitis is a rare disease that is associated with a high rate of mortality. Delays in diagnosis and treatment are common because of limited information on the organism in addition to its nonspecific clinical presentation. Prior reports have demonstrated that the encephalitis presents as multifocal lesions throughout the central nervous system with enhancement and edema. Here we report a case involving a 4-year-old previously healthy female child with a novel pathologic presentation of B mandrillaris infection, including vasculitis involving multiple large intracranial vessels as well as inflammation of multiple cranial nerves. The infection was ultimately fatal despite early diagnosis and initiation of targeted treatment.