What Are Kidney Stones?

Kidney stones are hard deposits formed from minerals and salts in the urine. They develop when certain substances become concentrated and form crystals inside the kidneys.

Kidney stones can remain in the kidney or move into the ureter, the tube that carries urine from the kidney to the bladder. A stone that obstructs urine flow may cause intense pain and, in some situations, affect kidney function.

Medical illustration showing kidney stones in the urinary system

Common types include:

Calcium stones:

The most common type, frequently made of calcium oxalate.

Uric acid stones:

May form in people with persistently acidic urine.

Struvite stones:

Associated with certain urinary tract infections.

Cystine stones:

Less common and linked to an inherited condition called cystinuria.

Not all kidney stones require surgery. Treatment depends on the stone and the patient's overall health.

Symptoms of Kidney Stones

Kidney stone symptoms vary according to the stone's size, location and whether it blocks urine flow.

Common symptoms include:

  • Sharp pain in the back, side or lower abdomen
  • Pain spreading towards the groin
  • Burning or discomfort while passing urine
  • Blood in the urine, which may appear pink, red or brown
  • Frequent urge to urinate
  • Nausea or vomiting
  • Difficulty passing urine

Some kidney stones cause no noticeable symptoms and are discovered during an ultrasound or another imaging test.

When Is a Kidney Stone an Emergency?

Seek urgent medical care if you experience:

  • Fever or chills with kidney stone symptoms
  • Severe pain that does not improve
  • Persistent vomiting or inability to keep fluids down
  • Very little urine or inability to pass urine
  • Symptoms of infection along with a suspected urinary blockage

A blocked kidney with infection can become a serious medical emergency and may require urgent drainage before definitive stone treatment.

What Causes Kidney Stones?

Kidney stones may form when urine contains high concentrations of certain minerals and salts.

Factors that can increase the risk include:

  • Insufficient fluid intake
  • Excessive sodium consumption
  • Certain dietary patterns, including excess animal protein in susceptible individuals
  • Family or personal history of kidney stones
  • Certain metabolic or medical conditions
  • Recurrent urinary infections associated with infection stones
  • Obesity and some medications

People who have previously developed kidney stones may be at increased risk of recurrence.

How Are Kidney Stones Diagnosed?

A urologist may recommend investigations to identify the size, position and possible complications of a kidney stone.

1. Ultrasound KUB

An ultrasound of the kidneys, ureters and bladder can help detect certain stones and identify swelling of the kidney caused by urinary obstruction.

2. Non-Contrast CT KUB

A CT KUB scan is commonly used to evaluate suspected urinary stones, particularly when more detail is needed about their size and location.

3. Urine Examination

Urine testing can identify blood, signs of infection and other abnormalities.

4. Blood Tests

Blood tests may assess kidney function and check for factors contributing to stone formation.

5. Stone Analysis

If a stone is passed or removed, laboratory analysis may help identify its composition and guide prevention.

The choice of investigation depends on symptoms, clinical findings, pregnancy status and other individual considerations.

Kidney Stone Treatment Options in Chembur, Mumbai

There are several approaches to treating kidney stones. The most appropriate option depends on stone size, location, composition, symptoms, obstruction, infection risk and the patient's medical history.

1. Medicines and Observation for Small Kidney Stones

Some small stones, particularly those in the ureter, may pass naturally without surgery.

Treatment may involve pain management, appropriate fluid intake, follow-up imaging and, in selected patients, medication to help the stone pass.

Not every stone will pass naturally. Observation is generally unsuitable when there is infection with obstruction, uncontrolled pain or worsening kidney function.

2. Laser Kidney Stone Surgery (Ureteroscopy / URSL)

Ureteroscopy is a procedure in which a thin instrument is passed through the urinary passage and bladder into the ureter.

The urologist may remove the stone directly or use a laser to break it into smaller pieces.

Laser lithotripsy for ureteric stone removal

It is commonly considered for selected ureteric stones and does not usually require an external surgical incision.

3. RIRS — Retrograde Intrarenal Surgery

RIRS is an endoscopic procedure used to treat selected stones inside the kidney.

A flexible ureteroscope is passed through the urinary tract into the kidney. Laser energy may then be used to fragment the stone.

RIRS laser treatment for kidney stones

RIRS may be considered for certain kidney stones depending on their size, location and other clinical factors. Larger or complex stones may require an alternative procedure or more than one treatment session.

4. PCNL — Percutaneous Nephrolithotomy

PCNL is generally considered for large or complex kidney stones, particularly stones measuring more than 2 cm.

The procedure involves creating a small access tract through the back to reach the kidney and remove or fragment the stone.

PCNL procedure for removal of large kidney stones

PCNL can be effective for larger stone burdens but also carries potential risks, including bleeding and infection. It requires careful preoperative assessment.

5. Shock Wave Lithotripsy (SWL / ESWL)

Shock wave lithotripsy uses externally generated shock waves to break selected urinary stones into smaller fragments that may pass through the urine.

Suitability depends on factors such as the stone's size, location, density and the patient's anatomy.

SWL may require more than one session and is not appropriate for every type of stone.

The treatment descriptions above cover recognised options, not a claim that all procedures or equipment are available at a particular Chembur facility. Confirm actual services before publishing. Clinical approach: European Association of Urology, 2026 Urolithiasis Guidelines.

RIRS vs PCNL vs URS — Which Kidney Stone Surgery Is Suitable?

Procedure Common use Approach
URS / URSL Selected stones in the ureter Endoscope through urinary passage
RIRS Selected stones inside the kidney Flexible endoscope through urinary passage
PCNL Large or complex kidney stones Small access tract through the back
SWL / ESWL Selected kidney or ureteric stones External shock waves

No single procedure is appropriate for every patient. The urologist will consider imaging findings, stone characteristics, expected benefits, possible complications and individual preferences before recommending treatment.

What to Expect Before and After Kidney Stone Surgery

Before treatment

The assessment may include imaging, blood tests, urine examination and an anaesthesia review. Any urinary infection may need treatment before a planned procedure.

During treatment

The surgical technique and type of anaesthesia depend on the selected procedure. Some patients may require a temporary ureteric stent to help urine drain.

After treatment

Mild discomfort, temporary burning during urination or blood-tinged urine may occur after certain procedures. Recovery time depends on the procedure, stone complexity and individual health.

Follow-up care

Follow-up may include stent removal, repeat imaging, stone analysis and advice to reduce the chance of further stone formation.

Patients should follow their treating team's instructions and report fever, severe worsening pain or difficulty passing urine promptly.

Can Kidney Stones Be Prevented?

Although not all kidney stones are preventable, certain measures can reduce the likelihood of recurrence.

  • Drink sufficient fluids to maintain an appropriate daily urine volume, unless fluid restriction has been advised.
  • Reduce excessive dietary salt.
  • Maintain a balanced diet with normal dietary calcium rather than unnecessarily restricting calcium.
  • Avoid excessive intake of animal protein where relevant.
  • Follow stone-specific dietary advice if previous stone analysis identifies a particular stone type.
  • Complete recommended metabolic investigations and follow-up if stones recur.

Patients with recurrent stones may benefit from a more detailed metabolic evaluation and an individualised prevention plan.

Kidney Stone Treatment Consultation in Chembur, Mumbai

If you are experiencing recurring flank pain, urinary symptoms or have been diagnosed with a kidney or ureteric stone, a urology consultation can help determine whether observation, medical treatment or stone removal is appropriate.

Patients seeking kidney stone treatment in Chembur, Mumbai, can discuss their existing ultrasound or CT KUB reports, symptoms, previous stone episodes and available treatment options during a consultation.

Bring to your consultation: Previous imaging reports, urine and blood test results, details of current medicines and records of any previous kidney stone treatment.

Dr. Shyam Mohan

Dr. Shyam Mohan

MBBS, MS (General Surgery), MCh (Urology)
Fellowship in Advanced Robotic Uro-Oncology
Clinic: Synergy Health Clinic
Appointment Contact: +91-9892533940
Address: 5th floor Building 2, Business Point, Synergy Health Clinic 501, opp. Saibaba Mandir, Chembur, Mumbai, Maharashtra 400077

Frequently Asked Questions About Kidney Stone Treatment

Some 5mm stones may pass naturally, particularly if they are in the lower ureter. The chance depends on location, anatomy and whether complications are present. Follow-up with a urologist is important.

Not necessarily. An 8mm stone may require active treatment depending on its location, obstruction, pain, infection and likelihood of passage. The decision should follow imaging and clinical evaluation.

The procedure is usually performed under anaesthesia. Temporary discomfort, burning during urination or stent-related symptoms may occur afterwards.

RIRS and PCNL have different indications. PCNL is generally preferred for larger kidney stones over 2 cm, while RIRS may suit selected smaller or moderately sized stones. Other factors can change this decision.

Yes. Surgery removes or treats existing stones but does not necessarily prevent new ones from forming. Hydration, dietary guidance, stone analysis and follow-up may help reduce recurrence.

The cost varies according to the procedure, hospital, stone complexity, investigations, anaesthesia, admission requirements and insurance coverage. A personalised estimate can be provided after assessment.

Recovery varies by procedure and patient. Some patients resume routine activities relatively quickly after endoscopic treatment, whereas PCNL may require a longer recovery. Follow the treating team's recommendations.

Seek medical assessment if you have suspected kidney stone pain, blood in urine, persistent urinary discomfort, recurrent stones or an imaging report showing a stone. Fever with suspected obstruction or inability to pass urine requires urgent care.