RESUMEN
Urinary Tract Infections (UTI) are a common bacterial infection in children. The diagnosis of UTI is very often missed in young children due to minimal and non-specific symptoms. The developing renal cortex in young children is vulnerable to renal scarring resulting in hypertension and chronic renal failure. A clinically suspected case of UTI should be defined and documented with urine culture report. After the diagnosis of UTI, its category should be defined. It will guide for proper radioimaging evaluation, choice of antimicrobial agent, duration of treatment, need of chemoprophylaxis etc. Even a single confirmed UTI should be taken seriously. Rational use of modern radioimaging for proper evaluation is essential. UTI in neonates, nosocomial UTI and UTI due to ESBL producing organisms are special situations, to be identified and managed with advanced therapy promptly and appropriately.