PCNL stone removal, or percutaneous nephrolithotomy, is a minimally invasive procedure used to remove kidney stones through a small opening made in the back.

Instead of waiting for a large stone to pass through the urinary tract, the surgeon creates a controlled access pathway directly into the kidney. A specialized instrument called a nephroscope is then used to locate, break and remove the stone or stone fragments. (niddk.nih.gov)

PCNL is particularly useful when a kidney stone is large, complex, difficult to treat with other techniques or unlikely to pass naturally.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialist evaluation of kidney function and kidney-stone-related complications and can coordinate appropriate treatment with surgical or urological specialists when stone removal is required.

Why Might a Kidney Stone Need PCNL?

Not every kidney stone requires PCNL.

Small stones may sometimes pass naturally or be treated with less invasive approaches. Larger stones, however, can become difficult to clear through the urinary tract and may cause obstruction, recurrent infection, bleeding or persistent pain. (niddk.nih.gov)

PCNL may be considered when:

• The stone is large

• There is a substantial stone burden

• The stone is complex or branched

• Other treatment methods are unlikely to provide adequate clearance

• A previous stone procedure did not completely clear the stone

• The stone is associated with obstruction or recurrent complications

• The stone location or characteristics make other approaches less suitable

The final choice depends on imaging, stone characteristics, anatomy, kidney function and the patient's overall health.

Which Kidney Stones Are Commonly Treated With PCNL?

PCNL is commonly considered for larger renal stones, including complex stone burdens.

It may be particularly useful for:

Large Renal Stones

A larger stone may be difficult to fragment and clear completely using shock-wave treatment or ureteroscopy.

Staghorn Stones

A staghorn calculus can occupy multiple parts of the kidney's collecting system.

These stones often require a planned surgical strategy, and PCNL may form an important part of treatment.

Multiple Kidney Stones

When several stones are present within the kidney, direct access can allow the surgeon to treat multiple stones during the same procedure in selected patients.

Hard or Dense Stones

Stone composition and density can influence how easily a stone responds to different treatment methods.

How Is PCNL Stone Removal Performed?

Although the exact technique varies, the procedure generally follows several stages.

Step 1: Preoperative Assessment

The medical team reviews:

• CT scan or other imaging

• Stone size and location

• Kidney anatomy

• Kidney function

• Urine testing

• Blood tests

• Current medicines

• Other medical conditions

A urine infection should be identified and appropriately managed before definitive stone removal whenever possible.

Step 2: Anaesthesia

PCNL is generally performed under anesthesia so the patient does not experience the procedure itself.

Step 3: Access to the Kidney

A small opening is created through the skin of the back into the kidney.

Imaging guidance helps the treating team establish a safe access route.

Step 4: Stone Visualization

A nephroscope is passed through the access tract so the stone can be seen directly.

Step 5: Stone Fragmentation

Depending on the stone and equipment used, the stone may be fragmented using energy-based instruments, including laser or other lithotripsy technology.

Step 6: Stone Removal

Stone fragments are removed through the access tract.

The objective is to achieve the best possible stone clearance while minimizing injury to the kidney.

Step 7: Drainage

A temporary nephrostomy tube, ureteral stent or another drainage method may be used in selected cases.

The need for drainage depends on the procedure and the patient's condition.

How Large Does a Stone Need to Be for PCNL?

There is no single size at which every patient automatically requires PCNL.

Treatment selection depends on:

• Stone diameter

• Total stone burden

• Location

• Number of stones

• Stone density

• Kidney anatomy

• Previous procedures

• Urinary obstruction

• Infection

• Overall health

PCNL is particularly established for larger and more complex renal stones. Other treatments, including shock-wave lithotripsy or ureteroscopy, may be appropriate for selected stones. (niddk.nih.gov)

PCNL vs Laser Ureteroscopy

Patients often want to know whether PCNL or laser ureteroscopy is better.

The answer depends on the stone.

PCNL

PCNL provides direct access to the kidney through a small tract and can be highly useful for larger stone burdens.

Flexible Ureteroscopy or RIRS

With ureteroscopy or RIRS, an instrument is passed through the natural urinary passage to reach the kidney. Laser energy can fragment the stone.

This approach may be suitable for many smaller or selected larger stones.

Why the Choice Matters

The surgeon considers:

• Stone size

• Stone location

• Stone density

• Kidney anatomy

• Expected stone-free rate

• Patient health

• Previous procedures

• Potential complications

There is no universal procedure that is best for every kidney stone.

PCNL and Laser Stone Removal

Laser technology can be used during PCNL to fragment selected kidney stones.

The laser breaks the stone into smaller pieces so they can be removed through the nephroscope.

However, not every PCNL requires the same fragmentation method. The technology selected depends on the stone characteristics and equipment available.

The term “laser PCNL” therefore describes a technique used in some procedures rather than a completely separate operation.

Is PCNL Considered Major Surgery?

PCNL is minimally invasive compared with traditional open kidney stone surgery, but it is still a surgical procedure performed under anesthesia.

Because the kidney is accessed through the skin, patients can experience complications such as bleeding, infection or injury to surrounding structures.

The procedure is usually performed in a hospital, and some patients require a period of observation or inpatient recovery. (niddk.nih.gov)

How Should You Prepare for PCNL?

Preparation depends on the patient's health and the treating team's protocol.

The evaluation may include:

• Blood tests

• Kidney-function assessment

• Urine analysis

• Urine culture when indicated

• Imaging review

• Medication review

• Assessment of blood-thinning medicines

• Evaluation of diabetes and blood pressure

• Anaesthesia assessment

Tell the medical team about all prescription medicines, over-the-counter products and supplements.

Do not stop blood thinners or other prescribed medicines unless the treating doctor gives specific instructions.

What If There Is an Infection Before PCNL?

An infected and obstructed urinary system can become a serious medical emergency.

If a kidney stone blocks urine flow and infection is present, the immediate priority may be to establish drainage and treat the infection rather than proceeding directly to definitive stone removal.

Drainage may involve a ureteral stent or nephrostomy depending on the clinical situation.

Definitive stone removal can then be planned after the infection has been appropriately controlled.

This distinction is important because stone removal and emergency drainage are not always the same step.

What Happens After PCNL?

After the procedure, the medical team monitors:

• Urine output

• Pain

• Blood pressure

• Temperature

• Kidney function

• Bleeding

• Signs of infection

Some patients may have a temporary nephrostomy tube or ureteral stent.

Mild blood in the urine can occur after urinary stone procedures, but significant or persistent bleeding requires medical assessment.

PCNL Recovery Time

Recovery differs between patients.

Factors affecting recovery include:

• Stone size

• Number of stones

• Complexity of the procedure

• Whether multiple access tracts were required

• Presence of infection

• Kidney function

• Other medical conditions

Some patients return to routine activities relatively quickly, while others need a longer recovery period.

The treating surgeon should provide individualized instructions regarding physical activity, wound care, medicines and follow-up.

What Are the Possible Risks of PCNL?

PCNL is generally an established treatment for suitable kidney stones, but complications can occur.

Potential risks include:

• Bleeding

• Infection

• Fever

• Injury to the urinary system

• Injury to nearby organs or structures

• Residual stone fragments

• Urine leakage

• Need for another procedure

• Anesthesia-related complications

The individual risk depends on the patient's anatomy, stone burden, health status and surgical complexity.

Can PCNL Remove the Entire Stone?

PCNL can achieve substantial stone clearance, particularly when used for large or complex renal stones.

However, complete clearance cannot be guaranteed in every patient.

Residual fragments may remain because of:

• Multiple stone locations

• Complex anatomy

• Large stone burden

• Difficult-to-reach calyces

• Staged treatment strategy

A follow-up scan may therefore be recommended to determine whether residual stones remain.

Can More Than One PCNL Procedure Be Required?

Yes.

Very large or complex stone burdens may require staged treatment.

The treating team may decide that attempting to remove everything during one procedure would create unnecessary risk.

A second procedure or another stone-removal technique may therefore be planned.

This is not necessarily a sign that the first treatment failed. It may be part of a deliberate strategy to improve safety and stone clearance.

What Happens to the Removed Kidney Stone?

When stone material is retrieved, it may be sent for stone analysis.

Knowing the composition can help identify why the stone developed and guide prevention strategies.

In selected patients, additional metabolic evaluation may include a 24-hour urine collection to assess urine volume and mineral levels. (niddk.nih.gov)

This is important because removing the existing stone does not automatically prevent another stone from forming.

How Can Kidney Stones Be Prevented After PCNL?

Prevention depends on the type of stone and the patient's individual risk factors.

General measures may include:

• Maintaining appropriate fluid intake

• Reducing excessive dietary sodium

• Following an individualized diet

• Taking prescribed preventive medicines

• Treating recurrent urinary infections

• Completing metabolic evaluation when recommended

• Attending follow-up imaging

Fluid intake should be individualized, particularly in people with chronic kidney disease, heart disease or fluid restrictions.

Can PCNL Affect Kidney Function?

The purpose of PCNL is to remove a kidney stone while preserving kidney function as much as possible.

A large obstructing or infected stone can itself threaten kidney function.

As with any procedure, PCNL can have complications that may affect the kidney, so preoperative kidney-function assessment and careful procedural planning are important.

Patients with pre-existing kidney disease require individualized assessment before undergoing stone treatment.

When Should You Seek Urgent Help After PCNL?

Contact the treating medical team urgently or seek emergency care for symptoms such as:

• High fever or chills

• Severe or worsening pain

• Heavy or persistent blood in urine

• Very little or no urine

• Difficulty breathing

• Fainting or severe weakness

• Confusion

• Rapid deterioration

These symptoms may indicate infection, significant bleeding, obstruction or another complication.

PCNL Stone Removal at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialist assessment of kidney function and kidney-stone-related conditions.

Depending on the patient's needs, evaluation may include:

• Review of ultrasound or CT scans

• Assessment of stone burden

• Creatinine and eGFR evaluation

• Urine examination

• Infection assessment

• Review of recurrent stone history

• Evaluation of urinary obstruction

• Assessment of kidney-related complications

• Coordination with an appropriate urological or surgical specialist for stone removal

• Follow-up kidney care after stone treatment

Because PCNL is a urological stone-removal procedure, the appropriate surgical specialist should determine whether PCNL is suitable for the individual patient.

Frequently Asked Questions

What is PCNL stone removal?

PCNL is a minimally invasive kidney stone procedure in which a small access tract is created through the back into the kidney. A nephroscope is used to locate, fragment and remove the stone. (niddk.nih.gov)

Is PCNL better than laser treatment?

PCNL and laser ureteroscopy are different approaches. PCNL is particularly useful for larger or complex kidney stones, while flexible ureteroscopy with laser can be appropriate for selected stones. The choice depends on stone size, location, anatomy and patient factors.

Is PCNL painful?

The procedure itself is performed under anesthesia. Some discomfort can occur during the recovery period, and pain medicines are commonly used according to the patient's needs.

How many days does it take to recover from PCNL?

Recovery varies according to stone complexity, procedure details and overall health. Some patients recover quickly, while more complex cases may require longer observation and recovery.

Does PCNL completely remove kidney stones?

PCNL can remove a large proportion of a stone burden, but complete stone clearance is not guaranteed in every patient. Complex stones may require staged procedures or additional treatment.

Can PCNL damage the kidney?

PCNL is designed to remove stones while preserving kidney tissue, but bleeding, infection and other complications are possible. The risk depends on the individual procedure and medical condition.

Can kidney stones come back after PCNL?

Yes. PCNL removes existing stones but does not automatically eliminate the factors responsible for stone formation. Stone analysis and preventive evaluation can help reduce recurrence risk.

Is PCNL suitable for every kidney stone?

No. Small stones may not require PCNL, and some stones are better suited to observation, shock-wave lithotripsy or ureteroscopy. Treatment should be selected after imaging and specialist assessment.

Conclusion

PCNL stone removal is an important minimally invasive option for patients with large, complex or otherwise difficult-to-treat kidney stones.

The procedure provides direct access to the kidney through a small tract in the back, allowing the stone to be visualized, fragmented and removed. It can be particularly useful when the stone burden is too large or complex for simpler treatment approaches.

Before PCNL, imaging, kidney-function testing, urine evaluation and assessment for infection help determine the safest treatment plan. Some patients may need a temporary stent or nephrostomy tube, staged treatment or additional procedures.

Removing a stone is only one part of long-term stone care. Understanding the stone type and addressing factors that contributed to its formation can help reduce the likelihood of recurrence.

For individualized kidney evaluation and specialist management of kidney-stone-related problems, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and does not constitute medical diagnosis, treatment or individualized medical advice. PCNL is a surgical procedure and is not appropriate for every kidney stone. Treatment depends on stone size, location, number, composition, anatomy, obstruction, infection status, kidney function and the patient's overall health. PCNL should be planned and performed by an appropriately qualified surgical or urological team. Do not delay treatment for an obstructing stone with fever, chills, very little or no urine, severe pain or rapidly worsening symptoms. Do not stop prescription medicines, including blood thinners, without instructions from your treating doctor. Consult Dr. Sandip Prabhakar Bhurke or another qualified healthcare professional for an individualized evaluation and treatment plan.