Ureteroscopy for kidney stones private in London

What it is

An endoscopic route to the stone, no incision required.

Ureteroscopy is a minimally invasive procedure in which a slim ureteroscope, either flexible or semi-rigid, is passed through the urethra into the bladder, up the ureter and, if necessary, into the kidney itself. There is no external cut. Once the surgeon has direct vision of the stone, a holmium or thulium fibre laser fragments it, converting the stone to fine dust and small chips. A wire basket retrieves any fragment large enough to grip. The result is a clear urinary tract, achieved from within.

Modern high-power holmium and thulium fibre lasers have transformed the procedure over the last five years. Stones that once needed staged treatment or open surgery can now be dusted in a single session with faster clearance and less heat delivered to the kidney. It is the workhorse of contemporary stone practice in London's teaching hospitals and their private wings.

Who it is for

The stones ureteroscopy handles best.

• Obstructing ureteric stones that are not passing spontaneously, causing renal colic, hydronephrosis or persistent haematuria.
• Kidney and ureteric stones between 5 and 20 mm, where laser dusting is highly effective in one or two sessions.
• Stones that have failed shockwave lithotripsy (ESWL), either because they did not fragment or because fragments have not cleared.
• Complex renal anatomy, calyceal diverticula, horseshoe kidney or tight infundibula, where direct-vision access is safer than shockwave.
• Dense stones above 1,000 Hounsfield units, calcium oxalate monohydrate, brushite and cystine, which resist shockwave fragmentation.
• Patients unsuitable for ESWL, including higher BMI where skin-to-stone distance blunts shockwave energy, and those on anticoagulation that cannot be safely paused.

Preparation

You will fast for six hours before the anaesthetic. Anticoagulant and antiplatelet medicines, including warfarin, apixaban, rivaroxaban and clopidogrel, are held in line with a haematology or cardiology plan tailored to why you take them. A urine dipstick and, where indicated, a mid-stream culture identify any urinary infection, which is treated with antibiotics before theatre because operating on infected urine risks urosepsis. Kidney imaging is confirmed, usually a non-contrast CT KUB within the last three months, sometimes supplemented by a MAG3 or DMSA renogram if function is uncertain.

Where the ureter is tight or inflamed, or where the stone is large, your surgeon may recommend pre-stenting: placing a JJ stent one to two weeks before the definitive procedure. This dilates the ureter passively, improves access on the day, and lifts single-session stone-free rates.

The procedure

What happens on the day.

Ureteroscopy is a day-case for most patients, with an overnight stay if the stone was large, the case was long, or the household support is limited. It is done under general anaesthetic, occasionally under spinal, and takes 30 to 90 minutes depending on stone burden and position.

Your surgeon passes the scope through the urethra into the bladder, identifies the ureteric orifice, and advances a guidewire into the kidney under fluoroscopic guidance. A ureteric access sheath may be placed to protect the ureter and allow multiple passes. The scope reaches the stone under continuous saline irrigation, and the holmium or thulium laser fires through a slender fibre to dust the stone. Larger fragments are removed with a nitinol basket. At the end of the case a JJ stent is typically left in place for one to two weeks to keep the ureter drained and to allow inflammation to settle.

Outcomes

What the numbers look like.

For ureteric stones treated with ureteroscopy and laser, single-session stone-free rates run at 85 to 95 per cent. For renal stones under 2 cm the figure is 80 to 90 per cent in one session, rising towards 95 per cent after a planned second look. Larger stones, over 2 cm, may need two staged procedures to reach a clean kidney, and PCNL becomes a fair alternative to consider from the outset.

Where

The London units we work with.

• King's College Hospital Private, Denmark Hill
• University College London Hospital Urology Private
• HCA The Wellington, St John's Wood
• HCA London Bridge Hospital
• Cromwell Hospital Bupa Urology, Kensington
• Guy's and St Thomas' Private Healthcare

Each unit runs a high-volume endourology service with holmium and thulium laser platforms, on-site interventional radiology and 24-hour cover for post-op concerns.

Recovery

The two weeks after theatre.

Most people leave on the same day or after one overnight stay. The stent is the dominant experience of recovery. Bladder irritability, frequency and urgency, mild flank ache when the bladder is full, and pink-tinged urine are all expected while the stent is in. Simple analgesia, good hydration and an alpha-blocker such as tamsulosin ease the symptoms.

Return to desk work is usually realistic at two to four days. Driving resumes once you are off strong analgesia and can perform an emergency stop without hesitation. Heavy lifting and hard exercise wait until the stent is removed. Fever above 38 degrees, rigors, heavy bleeding or inability to pass urine mean calling the team on the number in your discharge letter, without delay.

Compared to alternatives

Ureteroscopy against its rivals.

Extracorporeal shockwave lithotripsy (ESWL) uses focused shockwaves to fragment stones from outside the body, needs no anaesthetic and no incision, and is well-suited to renal stones under 2 cm that sit in the upper or middle pole. Single-session success sits at 60 to 75 per cent, and repeat sessions are common. It is a gentle option that suits the right stone.

Percutaneous nephrolithotomy (PCNL) reaches the kidney through a keyhole tract in the flank and is the gold-standard for stones over 2 cm and for staghorn calculi. It clears more stone per session than ureteroscopy at that size, at the cost of a larger anaesthetic, a one to three night stay, and a small transfusion risk.

Medical expulsive therapy, an alpha-blocker such as tamsulosin combined with hydration and analgesia, remains the first line for small ureteric stones under 5 mm with a reasonable chance of passing spontaneously. Ureteroscopy enters when expulsion fails or when pain, obstruction or infection force the issue.

Stent removal

A five-minute outpatient job.

The JJ stent comes out at one to two weeks in the outpatient department, under local anaesthetic gel via a flexible cystoscope. The scope passes through the urethra into the bladder, the stent is grasped and gently withdrawn, and you can walk out within a few minutes. Most patients describe it as brief and uncomfortable rather than painful, and the relief afterwards is immediate. Some units offer a stent with a thread that allows removal without cystoscopy.

Prevention

Making this the last stone.

Stones recur in around half of untreated formers within a decade. A 24-hour urine collection measures calcium, oxalate, citrate, uric acid, sodium and volume, and stone composition is analysed on any fragment retrieved. From that, a personal plan emerges: fluid intake above 2.5 litres a day, sensible dietary calcium with reduced oxalate load, moderated sodium and animal protein, and, where indicated, potassium citrate to raise urinary citrate or thiazide diuretics to reduce urinary calcium. Follow-up imaging at 6 to 12 months confirms the plan is holding.

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FAQ

Common questions.