Listeriameningitis associated with tonsillar herniation in an immunocompetent school-aged child

Abstract

Listeria monocytogenescan cause severe illnesses such as gastroenteritis, sepsis and neurolisteriosis, especially in infants, the elderly and immunocompromised patients. We report a case of a previously healthy school-aged girl presenting with severe neurological deficits found to haveListeriameningoencephalitis. Her potential exposure toL. monocytogeneswas consumption of contaminated cheese. She had some clinical improvement after initiation of tailoredListeriaanti-microbial coverage with ampicillin and gentamicin; however, she developed hydrocephalus requiring external ventricular drain placement and tonsillar herniation requiring emergent posterior fossa decompression. The patient made significant improvements after neurosurgical intervention, and along with continued antibiotics and subsequent rehabilitation services, she improved to near full recovery within a year. The case highlights that neurolisteriosis can affect even immunocompetent children, and aggressive neurosurgical interventions should be considered in patients who develop severe complications such as hydrocephalus and tonsillar herniation to improve outcomes.