Every day we see patients who have problems of urine drainage. From simple catheterization –that very often may not be possible or may even cause injury by mistake- to the secrets of suprapubic catheterization. From the simple placement of a ureter catheter to a pigtail catheter that cannot pass through a nephrostomy with a large window and distented pelvic kidney in difficult cases. A topic about which all participants have useful experiences to confess. If you have short videos with interesting cases to show, contact the Moderators to include them in the session.