Illustration of the urinary system: two kidneys, ureters, bladder and prostate
Explore the urinary system

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Start with symptoms

Urology, explained by a urologist

Clear answers aboutyour kidneys & bladder

Kidney stones, the prostate, urinary infections and laser surgery, explained in plain language and medically reviewed by Dr. Anand Utture, MCh.

Check a symptom
Dr. Anand Utture, consultant urologist, in theatre scrubs Your urologist Dr. Anand Utture MBBS, MS, MCh (Urology), DNB 27+ years · laser stone & prostate surgery Meet the doctor

Quick answer

How much water prevents stones?

Enough to pass 2 to 2.5 litres of urine a day, usually 2.5 to 3 litres of fluid.

All answers
01

Written and reviewed
by a practising urologist

Every answer here comes from Dr. Anand Utture's 27+ years in urology and 7,000+ procedures. It covers what a symptom usually means, what cannot wait, and what each treatment involves, so you arrive at your consultation informed rather than worried.

02 Symptom guide

What is my bodytrying to tell me?

Pick what you are noticing. Each card says what it commonly means, what cannot wait, and when to see a urologist.

Sudden side or back pain

What it often means

Sharp, wave-like pain below the ribs that moves towards the groin is the classic sign of a kidney or ureteric stone. Nausea, vomiting and restlessness are common with it.

Get help today if

Go to an emergency department the same day if the pain comes with fever or chills, repeated vomiting, very little urine, or if you have only one working kidney.

Book a urology check if

If the pain has settled, still get an ultrasound or CT KUB. A stone that has stopped hurting can keep blocking the kidney.

Kidney stone symptoms guide

This guide is general education, not a diagnosis. If you are worried, speak to a doctor. In an emergency, go to the nearest hospital.

03 Quick answers

Questions patientsask every day.

Short, direct answers first, with the full guide one click away.

Medically reviewed by Dr. Anand Utture ·

What size of kidney stone can pass on its own?

Stones smaller than about 5 mm usually pass within a few weeks with fluids and medicines that relax the ureter. Stones of 5–10 mm may pass but often need help. Stones larger than about 10 mm rarely pass and usually need treatment such as RIRS, ESWL or Mini-PCNL.

Read the full guide
Which is better for kidney stones: RIRS, Mini-PCNL or ESWL?

No single procedure is best for every stone. The choice depends on the stone's size, position, hardness and your anatomy. ESWL suits smaller, softer stones. RIRS clears most stones up to about 2 cm without any cut. Mini-PCNL is preferred for larger or very hard stones.

Read the full guide
How much water should I drink to prevent kidney stones?

Aim for enough fluid to pass about 2 to 2.5 litres of urine a day. For most adults that means 2.5 to 3 litres of fluid, and more in Mumbai's heat or with heavy sweating. Pale yellow urine is a good guide. Cutting down on salt and adding citrus also helps.

Read the full guide
Is a DJ stent painful, and when is it removed?

A DJ stent is a thin tube placed after some stone procedures to keep urine draining. Mild discomfort, a frequent urge and pink urine are common and settle with medicines. It is usually removed in a short day-care visit after one to four weeks. It must never be forgotten, because an old stent can block and form crusts.

Read the full guide
How long is recovery after laser kidney stone surgery?

After RIRS most people go home the same day or the next morning and return to desk work within two to five days. After Mini-PCNL, expect one or two nights in hospital and about a week before normal activity. Heavy lifting waits until your urologist clears it.

Read the full guide
Is an enlarged prostate the same as prostate cancer?

No. Benign prostatic hyperplasia (BPH) is a non-cancerous enlargement that becomes common after 50. It does not turn into cancer, but the two can exist together and cause similar urinary symptoms. A PSA blood test and an examination help tell them apart.

Read the full guide
When is surgery needed for an enlarged prostate?

Most men start with medicines. Surgery such as bipolar plasmakinetic resection (BPKRP) or laser enucleation is advised when medicines stop helping. It is also advised after an episode of urine retention, repeated infections or bleeding, bladder stones, or any effect on the kidneys.

Read the full guide
What PSA level is normal?

There is no single normal number. A PSA under 4 ng/mL is often used as a reference, but the normal range rises with age and prostate size. Infection, a recent catheter or cycling can raise it temporarily. A rising trend over time matters more than one reading, so results should be read by a urologist.

Read the full guide
Why do I keep getting urinary infections?

Repeated UTIs usually have a cause worth finding. Common ones are incomplete bladder emptying, a stone, low fluid intake, diabetes, changes after menopause, or a narrowing in the urethra. An ultrasound with a post-void residual check is a simple first step.

Read the full guide
Can men get urinary tract infections?

Yes. UTIs are less common in men, so when one happens it usually has an underlying reason, such as prostate enlargement, prostatitis, a stone or a stricture. A UTI in a man should always be followed by a urology evaluation, not just a course of antibiotics.

Read the full guide
When is blood in the urine an emergency?

Go to an emergency department if you pass large clots, cannot pass urine, feel faint, or have fever with the bleeding. Even a single painless episode that stops by itself needs a planned urology check. Painless visible blood can be an early sign of a bladder or kidney tumour.

Read the full guide
What does a urologist treat?

A urologist treats the kidneys, ureters, bladder, prostate, urethra and male reproductive organs. That covers kidney stones, enlarged prostate, urinary infections, blood in the urine, incontinence, urological cancers, male infertility and erectile problems, in both men and women.

Read the full guide
04 Procedures

Laser urology,explained simply.

Most kidney stones today are treated without a single cut, through the body's own passage.

In flexible ureteroscopy (RIRS), a scope thinner than a pencil lead passes up through the urethra and bladder into the kidney. A holmium or thulium fibre laser then breaks the stone into dust. For enlarged prostates, bipolar plasmakinetic surgery removes the blockage from the inside. Both are usually done as day care or with a single overnight stay.

  • No-cut options for most stones
  • Day-care recovery where suitable
  • Back to desk work in days
How RIRS works A thin flexible ureteroscope passes up the ureter into the kidney, and a laser fibre breaks a kidney stone into fine dust without any incision. Kidney Laser fibre Stone Flexible scope
How RIRS worksA thin flexible scope travels up the ureter and a laser turns the stone to dust, with no incision

Kidney stone procedures compared

Comparison of ESWL, RIRS, URS and Mini-PCNL for kidney stones
ProcedureBest forAnaesthesiaIncisionHospital stayBack to routineWorth knowing
ESWL (shock-wave lithotripsy)Kidney or upper-ureter stones up to about 1–1.5 cm that are not very hardUsually none or light sedationNoneDay care1–2 daysMay need more than one session
RIRS (flexible ureteroscopy with laser)Kidney stones up to about 2 cm, including lower-pole stonesGeneral or spinalNone, done through the urinary passageDay care or one night2–5 daysA temporary DJ stent is common
URS (ureteroscopy)Stones stuck in the ureterGeneral or spinalNoneDay care or one night2–4 daysOften the quickest relief for a blocked ureter
Mini-PCNLLarge (over 2 cm), branched or very hard kidney stonesGeneralAbout 1 cm keyhole in the back1–2 nightsAbout 1 weekHighest single-sitting clearance for large stones

Typical figures for uncomplicated cases. Your urologist will recommend a procedure based on CT findings, stone density and your overall health.

Dr. Anand Utture, consultant urologist, in theatre scrubs
05 Who writes these answers

Reviewed byDr. Anand Utture

Every guide on this site is written or reviewed by Dr. Anand Utture, a consultant urologist in Mumbai with more than 27 years in urology. His focus is laser kidney stone surgery (RIRS and Mini-PCNL), prostate care and minimally invasive urology.

He trained in Mumbai and completed fellowships in laser urology in New Zealand and advanced urology in Singapore. The aim here is simple: give you enough understanding to ask the right questions before any treatment.

Full profile & credentials
  • MBBS, MS, MCh (Urology), DNB (Genitourinary Surgery)
  • Fellowship training in New Zealand and Singapore
  • High-volume RIRS, Mini-PCNL and holmium / thulium laser surgery
  • Bipolar plasmakinetic prostate surgery (BPKRP)
27+Years in urology
12,000+Patients managed
7,000+Procedures performed
30+Guides & articles

Every symptom deserves a straight answer.

06 Ready to be seen?

Consult Dr. Utturein person.

Appointments, clinic timings and directions are on the doctor's main website. Choose the location nearest to you.

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