A ureteral stricture is a narrowing of the tube that drains urine from the kidney to the bladder. When it obstructs drainage, pressure builds in the kidney, and untreated obstruction can cause progressive, permanent loss of kidney function — often silently.
Causes
- Iatrogenic injury — the most common cause; injury during gynecologic, colorectal, vascular, or urologic surgery
- Stone disease — impacted stones and the instrumentation used to treat them
- Radiation to the pelvis
- Ischemia — loss of blood supply to a segment of ureter
- Retroperitoneal fibrosis or extrinsic compression
- Ureteropelvic junction (UPJ) obstruction, which may be congenital
Why stents are not a long-term answer
A ureteral stent or nephrostomy tube relieves obstruction and protects the kidney — they are the right immediate step. But they are drainage, not repair. Living with indwelling stents means periodic exchanges (typically every few months), and many patients experience flank pain, urgency, blood in the urine, and recurrent infections. For a patient with reasonable life expectancy and a reconstructable ureter, definitive repair is usually the better long-term path.
Reconstructive options
The right operation depends on where the stricture is, how long it is, and the quality of the surrounding tissue:
| Procedure | Used when |
|---|---|
| Ureteroureterostomy | Short strictures where the healthy ends can be joined directly after excising the diseased segment |
| Ureteral reimplantation (ureteroneocystostomy) | Distal strictures near the bladder; the healthy ureter is reattached to the bladder |
| Psoas hitch | Adds reach — the bladder is mobilized and secured to the psoas muscle to bridge a longer gap |
| Boari flap | Longer mid-to-distal defects — a flap of bladder wall is tubularized to replace the missing ureteral segment |
| Buccal mucosa graft ureteroplasty | Long proximal or mid strictures where cheek-lining graft is used to widen the ureter rather than replace it |
| Pyeloplasty | UPJ obstruction at the junction of the kidney and ureter |
Single-port robotic surgery
Ureteral reconstruction is technically demanding: it takes place deep in the retroperitoneum and requires precise, watertight suturing. Robotic assistance provides magnified three-dimensional vision and wristed instruments that make this fine suturing far more controlled than open or conventional laparoscopic approaches.
Single-port (SP) robotic technology extends this further by performing the operation through one small incision instead of several. The potential advantages are less incisional pain, fewer scars, and in appropriately selected patients a faster return to normal activity. Not every case is suited to a single-port approach — extensive scarring from prior surgery, unusual anatomy, or the need for wider exposure may make a multi-port or open approach the safer choice.
Why the surgeon matters more than the platform
The robot is an instrument, not the operation. What determines the outcome in ureteral reconstruction is choosing the right repair for the anatomy and executing a tension-free, well-vascularized, watertight anastomosis. A surgeon who performs the full range of these repairs can select the correct one rather than fitting the patient to a single familiar technique.
Recovery
- Hospital stay: commonly one to two nights
- Stent: a temporary internal stent is usually left for several weeks and removed in the office
- Return to work: often two to four weeks depending on the procedure and job demands
- Follow-up imaging: studies after stent removal confirm the kidney drains normally
Common questions
Do I have to live with a ureteral stent forever?
Usually not. Stents relieve obstruction and protect the kidney, but they are a temporizing measure, not a repair. Most ureteral strictures can be reconstructed definitively, after which the stent is removed. Long-term stent dependence is generally reserved for patients who are not candidates for reconstruction.
What is a Boari flap?
A Boari flap is a technique for bridging a long gap in the mid-to-lower ureter. A flap of bladder wall is raised and tubularized to create a new channel that reaches up to the healthy ureter, extending the repair well beyond what a simple reimplantation could cover.
What is single-port robotic surgery?
Single-port robotic surgery performs the entire operation through one small incision rather than several separate ports. Potential benefits include less incisional pain and fewer scars. Suitability depends on the anatomy, prior surgery, and the specific reconstruction required.
Can buccal mucosa be used in the ureter?
Yes. Buccal mucosa graft ureteroplasty uses a graft of inner cheek lining to widen a long, narrowed segment of ureter rather than removing and rejoining it. It is particularly useful for long proximal strictures where excision would leave too large a gap.
How urgent is treatment for a ureteral stricture?
Obstruction that is not drained can progressively damage the kidney, and this often happens without pain or obvious symptoms. Once drainage is established with a stent or nephrostomy tube, definitive reconstruction can usually be planned electively rather than emergently.
Will I lose my kidney?
Most obstructed kidneys can be preserved if drainage is restored and the stricture is repaired before irreversible damage occurs. Function is assessed before surgery with imaging and sometimes a renal scan; a kidney with negligible remaining function may occasionally be better removed than reconstructed.
Related procedures
Discuss your options with Dr. Azad
Referrals are welcome but not required. Bring any records from prior procedures — operative notes, imaging, or urethrograms — and we will review them together.
504-988-5271Dr. Babak Azad — Reconstructive Urology, Metairie & New Orleans, LA