School ager who wets his pants after voiding

VCUG of Cowper duct perforate syringocele
Lateral images from a voiding cystourethrogram exam during voiding (above) show a long tubular tract filled with contrast inferior to the contrast filled urethra. Lateral image after voiding (below) shows retained contrast pooling in the tubular tract.

The diagnosis was Cowper duct perforate syringocele.