Percutaneous nephrolithotomy is keyhole surgery for large kidney stones. Through a cut of about 1 cm in the back, the surgeon makes a direct channel into the kidney, passes a telescope, breaks the stone with laser, ultrasound or pneumatic energy, and removes the fragments.
It is the most effective single treatment for stones over 2 cm and for staghorn stones that fill the kidney, clearing 80 to 95 percent in one session, where ureteroscopy or shockwaves would need repeated attempts. It is more invasive than those options, with a small but real risk of bleeding and infection, and very complex stones may still need a second look.
What Percutaneous Nephrolithotomy (PCNL) involves
A non-contrast CT maps the stone's size, density and the anatomy around the kidney, including bowel, lung and spleen position. Urine is cultured, and any infection is treated for several days beforehand, since operating on infected urine can cause sepsis. Under general anaesthetic, a fine catheter is first passed up the ureter through the bladder to outline the kidney with contrast. With you lying prone or on your back, the surgeon or radiologist punctures the chosen kidney calyx with a needle under X-ray or ultrasound guidance, passes a guidewire, and widens the track with dilators to fit a working sheath. The nephroscope goes through the sheath, the stone is fragmented and suctioned or grasped out, and a flexible scope checks the other calyces. A nephrostomy tube, a ureteric stent, or neither (tubeless) is left at the end.
Who is a good candidate for Percutaneous Nephrolithotomy (PCNL)?
It is chosen according to stone size, position and hardness.
- Kidney stones larger than 2 cm
- Staghorn or branched stones
- Lower-pole stones over about 1 to 1.5 cm, which clear poorly with other methods
- Hard stones (cystine, calcium oxalate monohydrate) or stones that failed shockwave or ureteroscopy
- Stones in kidneys with a narrowed outflow or a calyceal diverticulum
It is usually not the right choice if:
- Untreated urinary infection
- Pregnancy
- Bleeding disorders or blood thinners that cannot be paused
- Stones under 1.5 to 2 cm, which are usually better treated by flexible ureteroscopy
- Bowel lying behind the kidney or certain spinal deformities, which need individual planning
Technique options
- Standard PCNL (24 to 30 Fr sheath): Fastest clearance for the largest and staghorn stones.
- Mini, ultra-mini and micro PCNL (under 20 Fr): Narrower tracks with less bleeding for stones of 1 to 2.5 cm, at the cost of a longer operation.
- Supine versus prone position: Supine allows simultaneous ureteroscopy from below (ECIRS) and easier anaesthesia; prone gives a wider field for puncture. Surgeon preference dominates.
- Tubeless or totally tubeless PCNL: No nephrostomy tube at the end, for uncomplicated cases; less pain and shorter stay.
- Combined with flexible ureteroscopy (ECIRS): Two surgeons work from above and below to clear complex stones through a single track.
What happens during your treatment
The operation takes 1 to 3 hours under general anaesthetic. Hospital stay is 1 to 3 nights. You wake with a bladder catheter and possibly a tube in your back, both usually removed within 1 to 2 days. Pink or red urine is normal for a few days.
Preparing for your trip
Plan for 7 to 10 days in Istanbul. Your surgeon reviews photographs and your medical history before you book, and you meet in person the day before surgery for examination, marking and consent with a professional interpreter.
- Stop smoking and nicotine at least four weeks before and after surgery; it is the single biggest avoidable cause of wound problems
- Tell the team about every medicine and supplement you take; blood thinners, some herbal products and hormone treatment may need to be paused on your doctor's advice
- Arrange for someone to travel with you or to be reachable, and keep the first days at home free of work and lifting
- Book a changeable return flight; your surgeon confirms when you are fit to fly
Recovery and results
Most people resume light activity within a week and work at 1 to 2 weeks. Avoid heavy lifting and vigorous sport for 2 to 4 weeks. If a stent was left, expect urgency, frequency and flank twinges when passing urine until it is removed, usually after 1 to 2 weeks; make sure you know who will remove it before you fly. A CT or X-ray at 4 to 12 weeks confirms clearance. Stone analysis and a 24-hour urine test guide prevention, which centres on drinking enough to pass over 2 litres of urine a day.
- Back to everyday activity: 1 to 2 weeks
- When results show: Clearance confirmed on imaging at 4 to 12 weeks
- How long they last: Stones recur in up to half of people within 10 years without prevention
Safety, risks and revision policy
PCNL is safe in experienced hands, but it is the most invasive of the stone procedures.
- Bleeding needing transfusion in about 2 to 7 percent, and embolisation of a bleeding vessel in under 1 percent
- Fever in 10 to 15 percent, and sepsis in around 1 percent
- Residual fragments requiring a second procedure
- Injury to the lung lining with fluid or air in the chest, mainly with upper-pole access
- Injury to the bowel, spleen or liver, which is rare
- Urine leak from the track, usually settled by a stent
- Loss of kidney function, or of the kidney, in very rare cases
Every written proposal arranged through Clinic-Y states what the clinic covers if a correction is needed. Ask for it before you book, not after.
Cost of Percutaneous Nephrolithotomy (PCNL) in Türkiye
Clinic-Y does not publish a single price for Percutaneous Nephrolithotomy (PCNL), because the honest figure depends on your case. What moves it:
- Stone size and complexity, which drive operating time
- Standard versus mini instruments and the energy devices used
- Hospital nights and any second-look procedure
- CT imaging, urine culture and pre-operative antibiotics
- Stent removal and stone analysis
Send your photographs or reports and you receive written, all-inclusive proposals from suitable teams, side by side. Reviewing your case is free.
Frequently Asked Questions
Why not laser through the natural passage instead?
Flexible ureteroscopy works well up to about 2 cm. Beyond that, several sessions are often needed, while PCNL usually clears the stone in one.
Will the hole in my kidney cause lasting damage?
Studies show no meaningful loss of kidney function from the track. The scar in the kidney is very small.
Can I fly home with a stent?
Yes. Arrange its removal at home or before departure, and keep a record, since a forgotten stent causes serious problems.
How do I stop stones coming back?
Drink enough to keep urine pale, reduce salt and animal protein, keep normal dietary calcium, and follow advice based on your stone analysis and urine tests.