Symptomatic urinary tract infections (UTIs) occur in 3-7% of girls and 1-2% of boys under 6 years of age. In 12-30% of these, recurrence of the infection is observed before 1 year. UTIs may present with kidney involvement or as bladder involvement. The diagnosis and proper treatment of urinary tract infections is of great importance in children, as in almost half of the patients they coexist with urinary tract abnormalities.