BACKGROUND: The aim of this study was to assess relations between the clinical course of UTI, IL-6 and IL-8 levels, and the presence of inflammatory changes detected by renal scintigraphy using 99mTc-DMSA (DMSA). MATERIAL/METHODS: We studied 33 children aged 1-24 months (mean 7.1+/-5.8 months) with first-time UTI. The subjects were divided in two groups: with fever (group I, n=10) and without fever (group II, n=23). Inflammatory markers (ESR, CRP, leukocyte count), urinary IL-6 and IL-8 level, and DMSA scan were evaluated in all children. RESULTS: Urinary IL-6 and IL-8 levels [IL-6, IL-8/creatinine (pg/mg)] were significantly higher in group I than in group II (Il-6 level: 39.4+/-41.1 vs. 6.3+/-13.7, p

Keywords: Interleukin-6 - urine, Interleukin-8 - urine, Technetium Tc 99m Dimercaptosuccinic Acid - diagnostic use, Urinary Tract Infections - radionuclide imaging, Child, Preschool, Creatinine - urine, Interleukin-6 - urine, Interleukin-8 - urine, Kidney - radionuclide imaging, Technetium Tc 99m Dimercaptosuccinic Acid - diagnostic use, Urinary Tract Infections - radionuclide imaging