Enteritis and pseudoappendicitis are typical manifestations of Yersini
a infections in children. This is a report on a child with localised t
umourous mesenteric lymphadenitis due to Yersinia enterocolitica persi
stent for a long time. We found specific antibodies against Yersinia o
uter membrane proteins repeatedly in the patients' serum. Only after a
ciprofloxacin therapy for 16 weeks we observed a recovery of our pati
ent. Discussion: Yersinia enterocolitica can be the cause of mesenteri
c lymphadenitis.