PCNL - Surgery for Large Kidney Stones

PCNL (Percutaneous Nephrolithotomy) is the gold-standard surgical procedure for large kidney stones - typically stones larger than 2 cm, staghorn calculi (stones that fill the entire kidney collecting system), and stones that have not responded to RIRS or ESWL. A 1 cm puncture is made in the skin of the back under imaging guidance; a working channel is created directly into the kidney, and the stone is broken and removed using ultrasonic, pneumatic, or laser energy. Stone-free rates of 85–95% are achieved in a single session for most large stones.

Mini PCNL uses a smaller skin puncture (4–5 mm vs ~1 cm for standard PCNL) and narrower instruments to access the kidney. It reduces blood loss, hospital stay, and post-operative pain compared to standard PCNL, while achieving comparable stone-free rates for stones up to 3 cm. Ultra-mini and micro PCNL variants use even smaller tracts (2–3 mm) for stones 1–2 cm. Dr. Nitin selects the appropriate tract size based on stone size, stone location within the kidney, and patient anatomy.

PCNL is performed under general anaesthesia - you are asleep and pain-free throughout. Post-operatively, the back puncture site causes moderate pain for 2–3 days, which is well-controlled with standard painkillers. A nephrostomy tube (drainage tube from kidney through the skin) is usually left in place for 24–48 hours. Most patients describe the recovery as manageable and significantly better than they anticipated. Hospital stay is 2–3 nights. Return to desk work is typically 7–10 days.

A staghorn calculus is a large stone that occupies the renal pelvis and extends into multiple calyces, resembling a stag's antlers on imaging. Staghorn stones are almost always treated with PCNL, which may require multiple access tracts or a second session (second-look PCNL) to achieve complete clearance. Left untreated, staghorn stones progressively damage kidney function and cause recurrent infections. PCNL with a skilled endourologist achieves stone-free rates of 70–85% for complete staghorn stones.

PCNL is a major endoscopic procedure with well-recognised risks that are discussed fully before surgery. Significant bleeding requiring transfusion or embolisation occurs in approximately 1–3% of cases. Urinary infection or sepsis (0.5–1%) - prevented by ensuring sterile urine pre-operatively. Injury to adjacent organs (pleura, bowel) is rare (<0.3%) and is minimised with image guidance. Residual stone fragments requiring a second session occur in 10–20% of large stones. Dr. Nitin will review your CT scan and discuss your individual risk profile at consultation.

A urine culture must be sterile before PCNL - if you have an active infection, surgery is delayed until the infection is treated. Pre-operative blood tests (CBC, creatinine, coagulation profile) and an anaesthesia review are done 5–7 days before admission. Stop blood thinners (aspirin, clopidogrel, warfarin) as instructed - usually 5–7 days before surgery. Fast from midnight the night before. Arrive at Apollo Hospital Gurugram on admission morning as instructed. Arrange for a responsible adult to accompany you and assist at home for the first 3–5 days.

Yes. PCNL is covered under CGHS, ECHS, Ayushman Bharat (PM-JAY), and all major private health insurance schemes. Apollo Hospital Gurugram is empanelled for all these schemes. Pre-authorisation is required for planned surgery. The hospital's insurance desk manages the paperwork. Bring your CGHS card, ECHS card, or insurance policy documents to the pre-operative consultation. For CGHS, ensure your referral from the CGHS dispensary is in order before admission.