Double-J stent placement (ureteral stent)

A double-J stent, or ureteral stent, is a thin flexible tube placed inside the ureter, the channel that carries urine from the kidney to the bladder. Both ends are curled into a "J" shape, one in the kidney and the other in the bladder, which keeps it in place. It is invisible from the outside. It is placed through the natural passages during a cystoscopy: the urologist passes an endoscope into the bladder, locates the opening of the ureter and slides the stent up to the kidney under X-ray guidance. No incision is needed. The stent allows urine to drain despite an obstruction (stone, narrowing, compression) and relieves the kidney. It is often placed as an emergency in renal colic complicated by fever, or as a planned procedure after ureteroscopy or other urinary tract surgery. It is temporary: it must be removed or changed within the time set by the urologist. At Clinique Pasteur Tunis, stent placement can be arranged as an emergency or as a planned procedure. Patients leave with the date for removal or replacement of their stent, which must be strictly respected.