Fig. 1

a Result and radiograph of patient’s first video urodynamic. Bladder compliance significantly decreased during the filling phase(C = 2.12 ml/cmH2O). In the anteroposterior film, there is a suspicious concentration of contrast around the bladder (arrow). b Result and radiograph of patient’s second video urodynamic. Bladder compliance was normal this time (C = 31). On oblique incidences, the contrast agent leaked into rectum from the bladder (B: bladder; R: rectum; arrow: fistula)