Medical Articles · 7 min read
Kidney Stone Treatment Options Explained
In brief
Kidney stones can be managed by waiting for them to pass, with medication to help them pass, or with procedures that break up or remove them: shock wave lithotripsy (SWL), ureteroscopy with laser lithotripsy, or percutaneous nephrolithotomy (PCNL). The best choice depends mainly on the stone's size, location and hardness.
Medically reviewed by Dr. Atip Chatsudthipong, MD on
Written by Editorial teamPublished Updated
How do urologists choose a treatment?
- Size — small stones often pass; larger stones usually need a procedure
- Location — kidney, upper ureter or lower ureter
- Composition and hardness — some stones respond poorly to shock waves
- Kidney anatomy and drainage
- Infection or blockage — which may require urgent drainage first
- Your circumstances — blood thinners, pregnancy, occupation, travel plans and preferences
How do kidney stone treatments compare?
| Observation ± medication | Shock wave lithotripsy (SWL) | Ureteroscopy + laser | PCNL | |
|---|---|---|---|---|
| How it works | Fluids, pain relief, sometimes an alpha-blocker to help the stone pass | Shock waves from outside the body fragment the stone | Telescope through the urinary tract; laser fragments the stone | Direct access to the kidney through a small incision in the back |
| Incision | None | None | None | Small (about 1 cm) |
| Anaesthesia | None | Sedation or general | General or spinal | General |
| Often suited to | Small ureteric stones (especially under ~5 mm) | Selected kidney or upper-ureter stones under ~2 cm | Most ureteric stones and many kidney stones up to ~2 cm | Large or complex kidney stones (over ~2 cm) |
| Hospital stay | None | Usually day case | Day case or overnight | Typically one or more nights |
| Considerations | Requires follow-up to confirm passage; not suitable with infection or uncontrolled pain | Fragments must pass naturally; less effective for hard stones and some lower-kidney stones | Temporary stent often needed | Most invasive, but highest single-treatment clearance for large stones |
These size thresholds reflect AUA and EAU guidance but are approximate; your urologist will tailor recommendations to your situation.
Can you wait for a kidney stone to pass on its own?
If a stone is small, your pain is controlled and there is no infection, it is reasonable to wait for it to pass, usually for up to four to six weeks with imaging to check progress. An alpha-blocker may be prescribed for some stones in the lower ureter.
Where can I learn more about each procedure?
Read the dedicated guides to ureteroscopy and laser lithotripsy for details of preparation, risks and recovery.
How can new kidney stones be prevented after treatment?
Treatment removes the current stone but not the tendency to form stones. Stone analysis, blood tests and — for people at higher risk — a 24-hour urine collection allow your urologist to recommend specific dietary changes or medication.
Frequently asked questions
Which kidney stone treatment is least invasive?
Observation and shock wave lithotripsy involve no instruments inside the body. Ureteroscopy uses no incision but requires anaesthesia. The least invasive option is not always the most effective one, so the choice balances invasiveness with the likelihood of clearing the stone.
Is SWL or ureteroscopy better?
Neither is better for everyone. Ureteroscopy generally achieves higher stone-free rates in a single treatment, while SWL avoids instruments inside the urinary tract. The stone's size, location and hardness, and your preferences, guide the choice.
References
- 1.Assimos D, et al. Surgical Management of Stones: American Urological Association/Endourological Society Guideline, Part I. J Urol. 2016;196(4):1153–1160. (opens in a new tab)
- 2.European Association of Urology. EAU Guidelines on Urolithiasis. (opens in a new tab)
- 3.Pearle MS, et al. Medical Management of Kidney Stones: AUA Guideline. J Urol. 2014;192(2):316–324. (opens in a new tab)
- 4.NIDDK. Treatment for Kidney Stones. (opens in a new tab)
This information is for general education and does not replace a consultation with a qualified doctor. If you have severe symptoms, seek emergency care (in Thailand, call 1669). See our medical disclaimer.