Reactive thrombocytosis in children with upper urinary tract infections

The relationship between reactive thrombocytosis and the level of urinary t ract infections was studied in 48 children. Platelets were counted before, during and after treatment. Reactive thrombocytosis was noticed in 74% of c hildren with upper and in 14% with lower urinary tract infections. A signif icant rise in the platelet count presented in another five children (15%) w ith upper urinary tract infections. Conclusion: Reactive thrombocytosis was found almost exclusively in the ren al parenchymal infections, usually during the recovery phase.