[Spontaneous proximal displacement of double-J ureteral catheters--successful ureteroscopic removal].

Numerous different complications have been reported after double-J stent placement. We report a spontaneous proximal displacement of double-J catheters in three children that had been succesfully removed ureteroscopically. Double-J indwelling catheters offer an enormous arsenal against different urologic diseases. No stent is ideal, so urologist must be familiar with the indications for usage, modes of insertion and possible complications. Spontaneous proximal or distal stent migration, as complication, has been reported in adult patients, but not in children.