A ureteric stone is a kidney stone that has moved from the kidney into the ureter, the narrow tube that carries urine from the kidney to the bladder. Pain usually begins when the stone blocks urine flow. Treatment depends on stone size, exact location, degree of blockage, infection risk, and kidney function.

Unlike stones sitting quietly inside the kidney, ureteric stones are more likely to cause acute symptoms and may require timely intervention.

What Happens When a Stone Enters the Ureter

The ureter is a narrow muscular tube. When a stone gets lodged inside it:

• Urine flow slows or stops
  
  
• Pressure builds up inside the kidney
  
  
• The ureter goes into spasm
  
  
• Severe pain develops
  
  

This pressure-related pain is called renal colic.

Ureteric stone pain is typically sudden, severe, and wave-like because the ureter contracts repeatedly against the blockage.

What Are the Symptoms of Ureteric Stones?

Common symptoms include:

• Severe pain in one side of the lower back
  
  
• Pain moving toward lower abdomen or groin
  
  
• Burning while passing urine
  
  
• Frequent urge to urinate
  
  
• Nausea or vomiting
  
  
• Blood in urine
  
  

Pain often fluctuates in intensity and may not improve with rest or position change.

How Is a Ureteric Stone Diagnosed?

Accurate diagnosis is essential before deciding treatment.

Clinical Evaluation

Doctors assess:

• Onset and severity of pain
  
  
• Radiation pattern
  
  
• History of kidney stones
  
  
• Fever or chills
  
  
• Urine output changes
  
  

Investigations

Test	Purpose
Ultrasound	Detects swelling and larger stones
CT Scan	Confirms exact size and location
Urine Test	Checks infection and blood
Blood Test	Evaluates kidney function

CT scan is considered the most reliable test to determine the exact position of a ureteric stone.

Treatment Decision Framework for Ureteric Stones

Treatment depends on:

• Stone size
  
  
• Location within ureter
  
  
• Severity of obstruction
  
  
• Presence of infection
  
  
• Kidney function
  
  

Stone Size	Likely Management	Clinical Reason
< 5 mm	Medical management	High chance of passing naturally
5–8 mm	Observation or procedure	Variable passage rate
> 8 mm	Usually procedural removal	Low chance of natural passage

Location matters. Stones lower in the ureter may pass more easily than upper ureter stones.

When Can a Ureteric Stone Pass Naturally?

Small stones may pass with:

• Adequate hydration
  
  
• Pain relief medicines
  
  
• Alpha blockers to relax ureter
  
  
• Monitoring urine output
  
  

Observation is appropriate only when:

• Pain is manageable
  
  
• No fever is present
  
  
• Kidney function remains normal
  
  

Regular follow-up is necessary during this period.

When Is Emergency Treatment Required?

Urgent intervention is required if:

• Fever develops along with pain
  
  
• There is reduced urine output
  
  
• Severe vomiting prevents hydration
  
  
• Pain becomes uncontrollable
  
  
• Blood in urine increases significantly
  
  

A blocked ureter combined with infection can lead to serious complications and requires immediate drainage.

Modern Ureteric Stone Treatment Options

URSL (Ureteroscopic Stone Removal)

Ureteroscopy involves passing a thin instrument through the natural urinary passage into the ureter.

The stone is:

• Visualised directly
  
  
• Broken using laser
  
  
• Removed or fragmented
  
  

Advantages:

• No external incision
  
  
• High success rate
  
  
• Direct stone removal
  
  

Commonly used for mid and lower ureter stones.

RIRS for Upper Ureter Stones

If the stone is near the kidney or in the upper ureter, RIRS may be preferred.

Laser energy breaks the stone into fine fragments which pass naturally.

DJ Stent Placement

A temporary internal tube may be inserted to:

• Relieve blockage
  
  
• Allow urine drainage
  
  
• Reduce kidney pressure
  
  
• Control infection before definitive treatment
  
  

The stent is removed after the stone is cleared.

ESWL for Selected Cases

Shock wave therapy may be considered for:

• Upper ureter stones
  
  
• Moderate-sized stones
  
  
• Patients without severe obstruction
  
  

Effectiveness depends on stone hardness and position.

Common Patient Questions

How long does ureteric stone pain last?

Pain usually continues until the stone moves or the obstruction is relieved. It may last hours and occur in waves. If untreated, episodes can recur until the stone passes or is removed.

Can ureteric stones cause kidney damage?

Yes. Prolonged obstruction can cause kidney swelling, known as hydronephrosis. Early treatment prevents long-term kidney injury.

Is ureteroscopic surgery painful?

The procedure is performed under anaesthesia. Post-procedure discomfort is usually mild and temporary. Recovery is generally quick compared to open surgery.

What happens if a ureteric stone is not treated?

Untreated obstruction may lead to infection, kidney swelling, and reduced kidney function. Fever with obstruction is considered a medical emergency.

Can a ureteric stone come again?

Yes. Recurrence is common if hydration and dietary changes are not maintained. Preventive evaluation helps reduce future episodes.

Ureteric Stone vs Kidney Stone: What Is the Difference?

Feature	Kidney Stone	Ureteric Stone
Location	Inside kidney	Inside ureter
Pain	May be absent	Usually severe
Urgency	Often monitored	Often requires intervention
Obstruction risk	Variable	Higher

Ureteric stones are more likely to cause acute symptoms because of the narrow diameter of the ureter.

Prevention After Treatment

Preventive measures include:

• Drinking adequate water daily
  
  
• Reducing excess salt intake
  
  
• Managing diabetes
  
  
• Periodic follow-up imaging if advised
  
  
• Analysing stone composition
  
  

Recurrence prevention is an essential part of long-term care.

When to Consult a Specialist

Consult immediately if:

• Pain is severe or persistent
  
  
• Fever or chills develop
  
  
• Urine output decreases
  
  
• Vomiting continues
  
  
• Symptoms recur
  
  

If consulting in Bangalore, especially around North Bangalore or New BEL Road areas, early evaluation helps preserve kidney health and prevent complications.

Final Perspective

Ureteric stone treatment requires timely evaluation and appropriate intervention. Small stones may pass naturally, but obstructive stones often require procedural removal.

The goal is not simply to remove the stone. It is to relieve obstruction, prevent infection, preserve kidney function, and reduce recurrence risk.