Fungal pseudomeningitis superimposed on Escherichia coli meningitis. Pseudomeningitis is the demonstration of microorganisms from the cerebrospinal fluid by stain or culture in a patient with symptoms suggesting meningitis. This is a report of fungal pseudomeningitis superimposed on a case of nosocomial Escherichia coli meningitis resulting from a neurosurgical procedure. Critical care personnel need to be aware of the possibility of pseudomeningitis with or without associated meningitis in the appropriate setting. 