[A Case of Hydrocephalus in Listeria Meningitis Treated by Endoscopic Third Ventriculostomy].

A 69-year-old woman presented with anorexia, fever, and vomiting. The patient was not a compromised host. She was finally diagnosed with Listeria meningitis and treated with ampicillin and gentamicin. However, her condition worsened over time. Non-contrast head CT showed ventricular dilatation. As a result, continuous right ventricular drainage was performed. Non-contrast MRI revealed hydrocephalus due to stenosis of the fourth ventricle. She underwent endoscopic third ventriculostomy(ETV)to improve cerebrospinal fluid circulation. This procedure achieved a good result. The efficacy of ETV for post-infectious hydrocephalus has not been proven, but previous cases suggest that ETV would be effective in non-communicating hydrocephalus, even if it were a result of neuroinfection.