Uroradiologic emergencies in infants and children.

Selected topics are discussed that represent common reasons for performing emergency uroradiologic examinations in infants and children, including urinary tract infection, hematuria, urinary retention, intermittent ureteropelvic junction obstruction, spontaneous perforation of the augmented urinary bladder, and urethral trauma. Common complications of voiding cystourethrography in children are also discussed.