PCNL Surgery for Kidney Stones

Percutaneous Nephrolithotomy, or PCNL surgery, is a minimally invasive procedure used to remove large or complex kidney stones. In this advanced PCNL procedure, the surgeon makes a small access tract through the skin to reach the kidney, then uses a nephroscope to locate, break up and remove the stone. Patients in Bengaluru can consult a certified urologist at NU Hospitals to determine whether PCNL surgery in Bengaluru is appropriate for their individual medical condition.

Consult an NU Hospitals urologist about the most suitable treatment for a large or complex kidney stone.

What Is PCNL Surgery?

PCNL surgery in full form is percutaneous nephrolithotomy, and it is an advanced minimally invasive surgery. "Percutaneous" means the route through the skin, and "nephrolithotomy" means removing the stone. The surgeon opens a small tract through the skin, usually in the back or side, and passes instruments through it directly into the kidney to reach the stone.

A nephroscope, a thin instrument with a camera and light source, is passed through this tract so the surgeon can see and treat the stone. Larger stones may be broken into smaller pieces before removal and extracted through the same tract in this nephroscope kidney stone surgery.

PCNL kidney stone removal procedure differs from two other common approaches used for treating kidney stones:

●   Open surgery generally requires a larger incision; the access site for kidney stone PCNL surgery is much smaller.

●   RIRS and URSL reach the stone via the natural urinary tract, not through the skin.

Note: "Minimally invasive" does not mean "non-surgical" or "without any incision." PCNL still involves a small incision and the passage of instruments into the kidney. The tract is just far smaller than what open surgery requires.

When May PCNL Be Recommended?

PCNL surgery may be considered for selected patients with:

●   Large kidney stones

●   Stones for which ESWL or ureteroscopy may be less suitable

●   A high overall stone burden

●   Stones remaining after previous treatment

●   Staghorn or branching stones

●   Multiple stones within the kidney

●   Stones that are difficult to treat effectively through another approach

●   Stones associated with obstruction or recurrent symptoms

●   Anatomical circumstances where direct access to the kidney may be beneficial

Stone size alone does not determine suitability. A urologist weighs several factors together, including stone number, total burden, location, shape, density, kidney anatomy, obstruction, infection, kidney function, prior treatment, and general health.

Tip: Bring previous scans, reports and treatment records to your consultation, when available.

Who May Need a Different Treatment or Additional Care First?

PCNL is not automatically the right choice for every large kidney stone. A urologist may recommend another treatment, urgent drainage or additional management first when there is:

●   Untreated urinary infection

●   Sepsis or systemic infection

●   A bleeding or clotting disorder

●   Use of blood-thinning medication that requires planning

●   Pregnancy

●   Significant anaesthetic risk

●   Kidney anatomy that affects safe access

●   A stone better suited to RIRS, URSL, ESWL or another procedure

●   A medical condition requiring stabilisation before surgery

Standard PCNL and Mini-PCNL

Standard PCNL and mini-PCNL surgery are two versions of the same PCNL operation. Both create access to the kidney through a small opening in the skin, usually on the back or side. The difference is the width of the tract and the instruments used through it. Mini-percutaneous nephrolithotomy generally uses a narrower tract.

However, a narrower tract is not automatically the right choice. The appropriate approach depends on stone size, kidney anatomy, available equipment and the surgeon's assessment. Larger or complex stones may still need standard PCNL, sometimes through more than one access route.

How Is PCNL Surgery Performed?

Before the Procedure

This includes a urologist consultation; review of symptoms and past treatments; imaging (CT, ultrasound, or X-ray) when needed; urine and blood tests; kidney function checks; infection screening; a medication review, including blood thinners; an anaesthesia assessment; fasting and admission instructions; and a consent discussion.

During the Procedure

These are the steps in PCNL surgery:

●   Anaesthesia is given, as decided by the clinical team.

●   Imaging guides the surgeon to the kidney.

●   A small access tract is created through the skin.

●   The tract is widened for the instrument.

●   A nephroscope is inserted to visualise the stone.

●   The stone is fragmented if needed.

●   Fragments are removed through the tract.

●   The kidney is checked for remaining stone and drainage.

●   A drainage tube, stent or catheter may be placed.

Patient Positioning

Position during surgery varies with surgeon preference, patient factors, stone location, anaesthesia and hospital protocol. There is no single fixed position for every case.

After the Procedure

Recovery includes monitoring in the recovery area; pain and nausea management; urine and blood monitoring as needed; monitoring for bleeding or infection; care of any catheter, stent, or tube; follow-up imaging if required; and discharge planning.

Benefits of PCNL

For selected patients, PCNL may offer:

●   Surgeons have direct access to selected kidney stones; increased treatment precision

●   Ability to address a substantial stone burden

●   Suitability for large, multiple or complex stones

●   Removal of stone fragments through a single access tract

●   A smaller access site than traditional open kidney stone surgery, leading to quicker recovery and smaller scars.

●   Preferred treatment option when a stone may not respond adequately to ESWL

●   Potential to reduce the number of treatment sessions, in selected cases

●   Excellent treatment approach for some staghorn or branching stones

The expected benefits depend on stone size, number, location, and complexity; kidney anatomy and overall health; and whether more than one procedure is needed.

PCNL Versus Other Kidney Stone Treatments

 

PCNL versus RIRS

PCNL reaches the kidney through a small tract in the skin. RIRS goes in through the natural urinary passage, so there's no external access point at all. PCNL is better suited to larger or more complex stones, whereas RIRS is better suited to smaller ones. If RIRS is performed on larger stones, it must be done in stages. Bleeding, hospital stay and recovery time can differ between the two.

PCNL versus ESWL

PCNL removes the stone surgically. ESWL breaks it apart using shockwaves from outside the body. No incision is needed, though ESWL sometimes takes more than one session. Anaesthesia and hospital stay also differ between the two. The success of the procedure depends on the stone's size, density and location. Fragments are handled differently too. PCNL clears them out during the procedure itself, while ESWL leaves them to pass naturally in urine, which can take days or weeks.

PCNL versus URSL

PCNL accesses the kidney directly. URSL goes in through the ureter and is generally used for stones in ureter. The right approach depends on stone location and how large it is.

Is PCNL Major Surgery?

Yes. PCNL is a surgical procedure performed under anaesthesia. Compared with traditional open kidney stone surgery, it is generally considered minimally invasive because it uses a small skin incision rather than a large one. It still requires hospital monitoring and structured care afterwards, and the complexity depends on the stone and the patient. PCNL is minimally invasive surgery, not open surgery, but it still involves anaesthesia, kidney access through the skin and postoperative monitoring like any other surgical procedure.

Is PCNL Painful?

Patients are under anaesthesia during PCNL, so they won't feel anything during the procedure. Once that wears off, they can expect some soreness at the access site. The back or side may hurt too, and if they have a nephrostomy tube, catheter or stent in place, that can cause discomfort for a few days. The team will manage this with pain medicine, so take it as prescribed. If the pain after PCNL worsens rather than eases, discuss it with the doctor.

Recovery Time After PCNL

Hospital stay

Most patients are observed in the hospital after PCNL. The duration of your hospital stay after PCNL depends on the procedure and your condition; some patients need a longer stay due to bleeding, infection, drainage needs, or additional treatment.

First few days

Some soreness at the access site is normal, and your urine may look darker than usual for a short while. If a catheter, stent or nephrostomy tube is in place, you'll notice some effects from that as well. Tiredness from the anaesthesia is also common in the first day or so.

Follow your team's advice on fluids, take medications as prescribed, and rest. Increase activity slowly, and care for the access site as instructed.

Return to work and routine activities

Timing depends on your type of work, how complex the procedure was, your symptoms, whether a drainage tube or stent is in place, anaesthesia recovery and your overall health. Your doctor will guide this individually.

Exercise, lifting, driving and travel

Follow your discharge instructions and get clearance from your treating team before resuming heavy lifting, gym exercise, driving, long-distance travel or sexual activity.

Follow-up

This may include stent or nephrostomy tube removal, access-site review, stone analysis, follow-up imaging, checking for residual fragments, kidney function review, metabolic evaluation, and planning to prevent recurrence.

Nephrostomy Tube or Stent After PCNL

A nephrostomy tube drains urine from the kidney through a small opening in the skin, placed so the kidney can drain while it heals. A stent is inserted inside the ureter to keep it open. And Foley's catheter to drain the bladder. Not every patient needs all three, and it depends on the individual case.

These devices can cause mild irritation, nephrostomy tube discomfort, or a stronger urge to urinate. Our team checks the drainage regularly and removes the tube or stent at a follow-up visit, once the kidney has healed enough. Call your doctor if you develop a fever, your pain gets worse, drainage stops, or the tube slips out.

Do not remove, clamp or adjust a nephrostomy tube, catheter or stent without instructions from the treating team.

Blood in the Urine After PCNL

Some blood in urine after PCNL is expected after kidney surgery and usually clears within a few days. The amount of bleeding after PCNL surgery can vary from patient to patient, so ask your team what's normal for your case before you leave the hospital.

But if the bleeding gets heavier, you pass large clots, can't urinate properly, or feel dizzy or weak, get medical help right away. If you have a nephrostomy tube, the hospital will tell you what normal drainage looks like and how to care for it. Follow those instructions.

Possible Side Effects and Complications

Expected or Relatively Common Short-term Symptoms

Most of these PCNL surgery side effects resolve within the first days after surgery. If any of them last longer than expected or get worse instead of better, inform your doctor:

●   Soreness near the access site

●   Urine that looks discoloured

●   Mild discomfort while passing urine

●   Tiredness from the anaesthesia

●   Irritation from a catheter, stent, or tube

●   A short period of restricted activity

Potential Complications

●   Bleeding, occasionally needing a transfusion

●   Kidney or urinary infection after PCNL, which can progress to sepsis if left untreated

●   Injury to the kidney or nearby structures

●   Urine leakage after PCNL

●   Fragments of stone left behind

●   A repeat procedure

●   Drainage-tube or stent problems

●   Chest-related complications, depending on the access route

●   Temporary effects on kidney function, rarely lasting

●   Anaesthesia-related complications

When to Contact the Hospital Urgently: Emergency Call

Contact the treating team immediately, or seek emergency care if you experience fever after PCNL or chills, severe or worsening pain, heavy bleeding or passing clots, difficulty passing urine, persistent vomiting, breathlessness, growing weakness or confusion, redness or discharge near the access site, a blocked or displaced nephrostomy tube, or any symptom worsening quickly or flagged in the discharge instructions.

Can PCNL Remove the Entire Stone in One Session?

The goal is to clear as much stone as safely possible. A single smaller stone may be removed in a single procedure. Larger, branching, or multiple stones sometimes need more than one access point, or a separate session. In the case of remaining fragments, a follow-up procedure such as RIRS, ESWL, or repeat PCNL is occasionally performed, along with imaging to confirm the result.

PCNL Surgery Cost

PCNL surgery cost depends on the number and complexity of stones, whether it's standard or mini-PCNL, the number of access points needed, anaesthesia and equipment, tube or stent use, hospital stay, room category, any additional procedures, and insurance approval. Contact the hospital for an estimate based on the factors affecting PCNL cost.

Preparing for PCNL Surgery

Before surgery, the treating team needs a full picture of what's happening in the patient's body and what they're currently taking:

●   Every medicine and supplement should be shared with the team, even ones taken only occasionally.

●   Any known allergies, whether to a medication, anaesthesia, or something else, should be mentioned in advance.

●   A fever or urinary symptoms in the days before surgery should be reported right away.

●   Blood work, urine tests, and imaging should be completed as advised, on the timeline the team sets.

●   If there's an infection, it needs to be treated.

●   Follow the fasting instructions before the procedure

●   Arrange transport and support after discharge.

●   Bring previous imaging and records.

●   Stop medicines only if the doctor instructs you to; never do so independently.

Diet and Long-Term Prevention After PCNL

Diet after PCNL surgery differs from long-term stone-prevention diet, and the two shouldn't be confused:

●   Resume fluids and food as the treating team advises, starting with standard post-anaesthesia guidance.

●   Some patients need more fluid than others, and the team will factor in kidney function and general health before giving specific guidelines.

●   Drinking more water than usual isn't automatically the right move after PCNL. The team can advise whether it fits the patient's condition.

●   Once the removed stone has been analysed, the team can say more about which foods or habits to watch for going forward.

●   Skip restrictive diets and unverified home remedies.

●   Recurrent stone patients may benefit from personalised counselling.

Care After PCNL and Kidney Stone Prevention

Long-term care reduces the chance of new stones forming.

●   Follow discharge instructions and take medication as prescribed.

●   Care for the access site and attend tube- or stent-removal appointments.

●   Complete recommended imaging.

●   Ask whether stone analysis is possible, and discuss metabolic evaluation if stones recur.

●   Follow personalised hydration and dietary advice. See NU Hospitals' guide to dietary and lifestyle changes to prevent kidney stones.

●   Check before making restrictive changes.

Remember that removing a stone doesn't remove the tendency to form new ones. You have to actively make lifestyle changes to stop recurrence.

PCNL Treatment at NU Hospitals in Bengaluru

NU Hospitals' urology teams in Bengaluru see a high volume of kidney stone cases, with the majority treated with ESWL or RIRS. PCNL is done for larger stones, multiple stones, or stones lodged where a scope can't reach them.

The choice of approach, PCNL, RIRS, ESWL, or something else, comes down to the stone's size, location, number, and complexity. Large or hard-to-reach stones get imaged first, so the team knows exactly what they're working with before choosing a method. Patients undergoing PCNL surgery in Bangalore under anaesthesia, stay as inpatients, and are monitored throughout recovery. A nephrostomy tube or stent, if placed, comes with a built-in follow-up visit to remove it. Stone analysis often follows treatment too. It explains to the team why the stone formed and helps prevent it from forming.

Specialist availability and procedure offerings for PCNL treatment in Bengaluru vary by branch. Confirm with your nearest NU Hospitals location before booking.

Why Choose NU Hospitals for PCNL?

Treating a kidney stone starts with understanding it fully, including its size, position and complexity, which is why the urology team at NU Hospitals works closely with imaging and diagnostics before recommending PCNL over another option. That same attention is given to the patient's recovery by the urologist for PCNL in Bengaluru, which includes postoperative monitoring, managing a nephrostomy tube or stent if one is placed, and helping patients understand how to reduce the risk of a stone forming again.

Book a consultation with a PCNL specialist in Bengaluru at NU Hospitals to discuss your PCNL treatment options, or request a second opinion. Please bring recent scans and reports to your consultation.

Book a PCNL Consultation in Bengaluru

A urologist reviews the scans, the stone's size and position, and the patient's health before deciding whether PCNL surgery is the right approach. Two patients with similarly sized stones can end up on different treatment paths.

Book a consultation today with an expert urologist at NU Hospitals in Bengaluru for large kidney stone treatment in Bengaluru!

Frequently Asked Questions

Q. What is the full form of PCNL?

PCNL stands for percutaneous nephrolithotomy. Percutaneous means through the skin. Nephrolithotomy means removing a stone from the kidney.

Q. What is PCNL surgery?

The surgeon makes a small tract through the skin into the kidney, then uses a nephroscope to see and remove the stone, breaking it up first if it's too large to come out whole.

Q. Which kidney stones may require PCNL?

Large stones, multiple stones, branching stones or otherwise complex stones may need PCNL. Your urologist decides this after a full evaluation.

Q. What size kidney stone requires PCNL?

There's no single size that automatically means you need PCNL. Your urologist considers how much stone there is overall, where it sits, your kidney anatomy, infection risk, and other factors before deciding.

Q. Is PCNL major surgery?

It's minimally invasive compared to open surgery, but it's still surgery. You'll need anaesthesia, kidney access through the skin, and monitoring in hospital afterwards.

Q. Does PCNL involve an incision?

Yes. There's a small access point in the skin. It isn't incision-free.

Q. Is PCNL painful?

You're under anaesthesia during the procedure. Afterwards, some soreness is normal and managed with pain relief, so it shouldn't be called painless.

Q. Is PCNL performed under general anaesthesia?

Usually, yes. But the final call on anaesthesia depends on your surgical and anaesthesia teams and your condition.

Q. How long does PCNL surgery take?

That depends on how much stone needs to be cleared, how complex it is, and other patient factors. There's no fixed duration for everyone.

Q. How long is the hospital stay after PCNL?

It varies. Some patients go home the next day; others need longer depending on how the procedure went and how drainage is progressing.

Q. What is the recovery time after PCNL?

There's no single number here. It comes down to how complex your procedure was and how your body heals. Your discharge instructions will lay out what to expect in your case.

Q. When can I return to work after PCNL?

There's no fixed answer. A desk job and physical work call for different timelines, and your doctor will decide based on how your procedure went and how you're feeling.

Q. What is mini-PCNL?

This is a version of PCNL that uses a smaller access tract and smaller instruments. It doesn't work for every stone or every patient.

Q. Is mini-PCNL better than standard PCNL?

Not universally. Which one is right comes down to the stone, your kidney anatomy, the equipment on hand, and what your surgeon decides after assessing your case.

Q. Is a nephrostomy tube always required after PCNL?

No. Some patients need one, some don't. It depends on the procedure and your condition at the time.

Q. Is a ureteral stent always required after PCNL?

Not always. Whether you need one depends on drainage and swelling, among other things during surgery.

Q. How long does a nephrostomy tube remain after PCNL?

There's no set number of days. Your surgeon decides based on drainage and imaging, and confirms the timing at your follow-up.

Q. Is blood in the urine expected after PCNL?

A bit of reddish discolouration for a short while is normal. But if it's heavy, doesn't let up, or gets worse, don't wait it out. Call your doctor.

Q. What causes fever after PCNL?

Usually infection. If you develop a fever after surgery, tell your team right away.

Q. What are the possible complications of PCNL?

Bleeding, infection, urine leakage, injury to nearby organs, and leftover stone fragments are all possible PCNL complications. A drainage tube or stent, when used, can present its own issues.

Q. Can PCNL remove a staghorn kidney stone?

In selected cases, yes, though PCNL for staghorn stones might often require more than one access tract or procedure to clear completely.

Q. Can PCNL remove multiple kidney stones?

Sometimes. It comes down to how much stone is there in total, where it's sitting, and whether treating it all in one go is safe.

Q. Can PCNL remove the entire stone in one session?

Often, yes. Larger or complex stones sometimes need staged treatment or a second procedure.

Q. Can kidney stones return after PCNL?

PCNL removes the stones you have now. It doesn't stop new stones from forming, so prevention still needs its own plan after you've recovered.

Q. Will I need another procedure after PCNL?

Sometimes, if fragments are left behind or the stone is particularly complex. Your surgeon will let you know if that's likely in your case.

Q. How is PCNL different from RIRS?

PCNL goes through the skin to reach the kidney. RIRS goes in through the natural urinary passage instead. The two suit different stone burdens and can mean different recovery paths.

Q. Is PCNL better than ESWL?

Neither wins outright. It comes down to the size, density and location of the stone, plus your overall health.

Q. What should I eat after PCNL surgery?

Follow whatever your discharge papers say right after surgery. Diet advice for preventing future stones is a separate conversation, and it's usually tailored to you.

Q. Is PCNL surgery available at NU Hospitals in Bengaluru?

Yes, 

Q. Is PCNL covered by health insurance?

That depends on your policy, insurer, waiting periods and authorisation requirements. Check with the hospital's insurance desk and your insurer directly.

Q. How much does PCNL surgery cost?

Cost varies with stone complexity, the PCNL approach used, hospital stay, anaesthesia and any extra procedures needed. Contact the hospital for an estimate based on your case.