[Peritonitis as a first manifestation of Neisseria type C meningitis].

A 15-year-old boy was first referred for a clinical presentation of revealed peritonitis. Abdominal endoscopy showed normal appendix but the presence of purulent peritoneal fluid. Antibiotics were immediately administered. Ten hours later clinical signs of meningitis occurred, and lumbar puncture was performed. CSF bacterial meningitis characteristics were present but no bacteria was observed. However Neisseria meningitidis type C was detected by direct peritoneal fluid examination and by 24(th) hour blood culture. Peritoneal and the CSF fluid culture were negative, but DNA analysis from peritoneal fluid was positive.