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...Introduction urinary tract infections uti is common in the pediatric age group early recognition and prompt treatment of are important to prevent progression infection pyelonephritis or urosepsis avoid late sequelae such as renal scarring failure infants young children with may present few specific symptoms older patients more likely have findings attributable an differentiating cystitis from patient not always possible although who appear ill fever should be presumed if they evidence pathophysiology generally begins bladder due ascending perineal contaminants usually bowel flora escherichia coli neonates assumed hematogenous rather than this etiology explain nonspecific associated these after neonatal period bacteremia usual cause initial primary locus disease kidneys then potential bacterial invasion overt occur stasis low flow conditions exist triggered by infrequent incomplete voiding reflux other abnormalities even absence lead vesicoureteral it worsen a pre existing untreated cau...