Does Kidney Stent Placement Require an Incision?
No, ureteral (kidney) stent placement does not require a surgical incision—it is performed endoscopically through the urethra using a cystoscope, making it a minimally invasive procedure.
How Ureteral Stents Are Placed
Ureteral stents are typically placed using one of two approaches, neither requiring an external incision:
Retrograde Approach (Most Common)
- Access route: Through the urethra and bladder using a cystoscope
- Technique: A guidewire is advanced through the ureteral orifice in the bladder, followed by advancement of the stent over the wire into the ureter and kidney 1
- Anesthesia: Can be performed under general anesthesia, local anesthesia, or even in an office setting with local anesthetic gel 2, 3
- No external incision needed: The entire procedure is performed through natural body openings 4
Antegrade Approach (Less Common)
- Access route: Through a percutaneous nephrostomy (PCN) tract into the kidney
- When used: Reserved for cases where retrograde access fails, such as with large impacted stones, tight strictures, or after urinary diversion 1, 5, 1
- Important distinction: While PCN placement itself requires a small needle puncture through the skin into the kidney (using imaging guidance), this is a percutaneous needle access, not a surgical incision 1
- The stent is then advanced in an antegrade fashion down the ureter 1
Key Clinical Context
Stent placement is fundamentally different from open surgery:
- Open surgical procedures (ureterolithotomy, pyeloplasty) require actual surgical incisions and are rarely needed in modern practice 5
- Laparoscopic approaches also require small incisions but are distinct from stent placement 5
- Stenting is classified as an endoscopic procedure without transmural incision 6
Common clinical scenarios for stent placement include:
- Ureteral obstruction from stones 1
- Ureteral injury requiring temporary drainage 7
- Prophylactic placement during pelvic surgery 4
- Malignant ureteral obstruction 1
Important Caveats
Pain and tolerance considerations:
- While no incision is required, the procedure can be uncomfortable, particularly under local anesthesia
- Studies show 88.8% of women found office-based stent placement under local anesthesia painful, with 50% stating they would not repeat it 2
- However, office-based placement under local anesthesia is safe and feasible in selected patients 3
Success rates:
- Retrograde stent placement has very high technical success rates approaching 96-100% 8, 3
- Failure typically occurs due to inability to pass the guidewire or identify the ureteral orifice, not anatomical barriers requiring incision 3
Post-procedure considerations: