Secured closed system drainage of a retrograde ureteric catheter

BACKGROUND Retrograde ureteropyelography plays a vital role in imaging of the upper tract, particularly in aiding the diagnosis of upper tract urothelial cancers.1 Retrograde studies in theatre are often of inferior quality compared with those performed in the radiology department. Retrograde ureteric catheter placement in theatre is therefore followed by formal retrograde studies in the radiology department. However, it is not uncommon for the retrograde catheter to become displaced in the journey from theatre to the radiology department. We describe a secured, closed system drainage of the ureteric catheter into the urine drainage bag via the urethral catheter.