School ager with a urinary tract infection Pediatric Imaging Genitourinary September 28, 2026August 13, 2026 AP image from a voiding cystourethrogram exam during voiding shows a non-obstructive ellipsoid-shaped dilation of the posterior urethra just distal to internal urethral sphincter. The diagnosis was spinning top urethra. Related Published September 28, 2026August 13, 2026