An enlarged kidney means that one or both kidneys appear larger than expected on an imaging test such as an ultrasound or CT scan.
Kidney size can vary between individuals, so an enlarged kidney is not a diagnosis by itself.
The enlargement may occur because of urine buildup, cysts, inflammation, infection, obstruction, increased workload of one kidney or certain structural or inherited conditions.
Therefore, the right kidney enlargement treatment depends on identifying why the kidney has become enlarged.
An enlarged kidney should not automatically be treated with a medicine or home remedy. The underlying cause needs to be investigated first.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation of kidney enlargement, abnormal kidney-function tests and related kidney conditions.
Is an Enlarged Kidney Always a Sign of Kidney Disease?
No.
Kidney enlargement can occur for several reasons, and not every cause indicates permanent kidney damage.
For example, enlargement may occur because:
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Urine is unable to drain normally
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A kidney infection causes inflammation
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A cyst increases the apparent kidney size
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Multiple cysts develop in an inherited kidney disorder
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One kidney becomes larger because it is compensating for reduced function of the other
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A structural abnormality affects kidney size
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A mass or other lesion is present
The imaging appearance must therefore be interpreted alongside symptoms, urine tests, kidney-function results and medical history.
What Can Cause an Enlarged Kidney?
There are several possible explanations for kidney enlargement.
1. Hydronephrosis
Hydronephrosis occurs when urine builds up in the kidney because drainage through the urinary tract is impaired.
Possible causes include:
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Kidney stones
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Ureteral narrowing
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Enlarged prostate
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Blood clots
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Tumors or masses
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Congenital abnormalities
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Other urinary tract blockages
The kidney may become swollen as urine accumulates.
Treatment focuses on restoring normal urine drainage and addressing the cause of the obstruction.
2. Kidney Stones
A stone can obstruct the ureter and prevent urine from flowing normally from the kidney to the bladder.
This may result in hydronephrosis and an enlarged appearance of the affected kidney.
Possible symptoms include:
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Severe flank pain
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Pain spreading toward the abdomen or groin
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Blood in urine
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Nausea
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Vomiting
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Burning urination
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Urinary infection
Treatment depends on stone size, location, obstruction, infection and kidney function.
3. Kidney Infection
A significant kidney infection can cause inflammation and temporary enlargement.
Symptoms may include:
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Fever
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Chills
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Flank or back pain
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Burning urination
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Frequent urination
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Nausea
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Vomiting
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Feeling unwell
When bacterial infection is identified or strongly suspected, appropriate antimicrobial treatment may be required.
If infection occurs behind a blocked urinary tract, urgent drainage may be necessary.
4. Kidney Cysts
A simple kidney cyst is a fluid-filled structure that commonly occurs with increasing age.
Many simple cysts do not cause symptoms or require treatment.
However, a large cyst can sometimes contribute to discomfort or affect surrounding structures.
Treatment depends on the cyst's characteristics and whether it is causing complications.
A complex cyst may require additional imaging and specialist evaluation rather than being assumed to be a harmless simple cyst.
5. Polycystic Kidney Disease
In polycystic kidney disease, numerous cysts can develop in the kidneys.
As cysts enlarge and increase in number, the kidneys can become significantly larger.
Patients may also have:
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High blood pressure
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Abdominal discomfort
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Flank pain
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Blood in urine
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Kidney stones
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Recurrent urinary infections
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Declining kidney function
Management focuses on controlling complications, monitoring kidney function and using disease-specific treatments when appropriate.
6. Compensatory Enlargement
Sometimes one kidney may become larger because it is doing more of the filtering work when the other kidney is absent, damaged or functioning poorly.
This is known as compensatory enlargement.
The significance depends on why the other kidney has reduced function.
A larger kidney in this situation does not necessarily mean that the enlarged kidney itself is diseased.
7. Kidney Tumors or Masses
An abnormal mass can change the size or appearance of a kidney.
Not every mass is cancerous, but an unexpected solid lesion or complex abnormality requires appropriate imaging and specialist assessment.
Further evaluation may include contrast imaging, MRI or other investigations depending on the clinical situation.
What Symptoms Can an Enlarged Kidney Cause?
An enlarged kidney may cause no symptoms at all.
When symptoms occur, they depend largely on the underlying cause.
Possible symptoms include:
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Pain in the side or flank
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Abdominal discomfort
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Back pain
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Blood in urine
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Changes in urination
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Fever
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Chills
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Nausea
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Vomiting
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Swelling
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High blood pressure
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Recurrent urinary infections
It is important to remember that these symptoms are not specific to kidney enlargement.
A proper evaluation is needed to identify the actual cause.
Can You Feel an Enlarged Kidney?
In many adults, an enlarged kidney cannot be felt through the abdomen.
A person should not try to determine kidney size by pressing on the side or abdomen.
Kidney enlargement is usually identified through imaging.
An ultrasound may be performed initially, while CT or MRI may be recommended when more detailed information is required.
How Is Kidney Enlargement Diagnosed?
The first step is often to confirm whether the kidney is genuinely enlarged and determine what is causing the change.
Ultrasound
Ultrasound can provide information about:
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Kidney size
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Kidney structure
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Cysts
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Urinary obstruction
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Hydronephrosis
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Bladder abnormalities
It is commonly used because it does not involve radiation.
CT Scan
CT imaging can provide more detailed information about:
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Kidney stones
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Urinary obstruction
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Masses
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Kidney anatomy
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Other abdominal or urinary abnormalities
The type of CT required depends on the suspected condition.
MRI
MRI may be useful in selected situations, particularly when additional soft-tissue characterization is needed.
Blood and Urine Tests for an Enlarged Kidney
Imaging alone may not explain the full clinical picture.
Doctors may also recommend:
Blood Tests
Depending on the suspected cause:
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Serum creatinine
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eGFR
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Urea
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Electrolytes
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Complete blood count
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Other relevant tests
Urine Tests
Testing may look for:
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Blood
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Protein
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Albumin
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Infection
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Crystals
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Other abnormalities
These tests help determine whether the enlarged kidney is associated with impaired kidney function, infection or another condition.
What Is the Treatment for an Enlarged Kidney?
There is no single medicine that treats kidney enlargement itself.
Treatment is directed toward the underlying cause.
If Obstruction Is Responsible
The priority is to restore urine drainage.
Depending on the cause, treatment may involve:
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Ureteral stenting
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Nephrostomy drainage
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Stone removal
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Treatment of ureteral narrowing
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Management of prostate-related obstruction
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Treatment of another obstructing lesion
The exact approach depends on the location and severity of the blockage.
If a Kidney Stone Is Responsible
Stone treatment depends on:
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Size
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Location
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Composition
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Degree of obstruction
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Symptoms
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Infection
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Kidney function
Selected stones may be managed conservatively, while larger or obstructing stones may require procedures such as ureteroscopy, shock wave lithotripsy or PCNL.
If Infection Is Responsible
Appropriate antimicrobial treatment may be required.
If the infected kidney is also obstructed, drainage may need to be established urgently.
If a Simple Cyst Is Responsible
Many simple kidney cysts require only observation.
A cyst that is large, symptomatic or has complex features may require further assessment or intervention.
If Polycystic Kidney Disease Is Responsible
Treatment focuses on managing blood pressure, monitoring kidney function, treating complications and considering disease-specific therapy when appropriate.
Can an Enlarged Kidney Return to Normal Size?
Sometimes, but it depends entirely on the cause.
If enlargement results from temporary inflammation or urine accumulation caused by a reversible obstruction, kidney size or appearance may improve after appropriate treatment.
However, enlargement caused by conditions such as longstanding cystic disease may persist.
Similarly, structural changes resulting from chronic disease may not return completely to their previous appearance.
Follow-up imaging may be used to assess the response to treatment when appropriate.
Does Kidney Enlargement Affect Kidney Function?
It can, depending on the underlying condition.
For example, prolonged urinary obstruction may reduce kidney function.
A severe infection may also temporarily or permanently affect kidney function in some cases.
On the other hand, a simple kidney cyst or compensatory enlargement may occur without significant loss of kidney function.
This is why kidney size and kidney function are related but not identical measurements.
Can an Enlarged Kidney Cause Kidney Failure?
An enlarged kidney does not automatically mean kidney failure.
However, certain underlying causes can damage kidney function if they remain untreated.
Potentially concerning situations include:
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Long-standing urinary obstruction
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Severe or recurrent kidney infections
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Advanced polycystic kidney disease
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Significant structural kidney disease
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Certain tumors or masses
Early diagnosis of the cause can help guide appropriate treatment and kidney monitoring.
What About an Enlarged Kidney With Hydronephrosis?
Hydronephrosis deserves particular attention because it indicates impaired urine drainage.
The obstruction may occur anywhere along the urinary tract.
Possible causes include:
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Stone
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Ureteric narrowing
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Enlarged prostate
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Tumor
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Congenital abnormality
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Other mechanical blockage
Mild hydronephrosis may sometimes be monitored depending on the cause and clinical situation.
Significant obstruction, worsening kidney function, severe pain or infection may require more urgent intervention.
Is an Enlarged Kidney Dangerous?
The risk depends on the reason for enlargement.
An incidental simple cyst may be relatively low risk, whereas an obstructed and infected kidney can represent a medical emergency.
Factors that make kidney enlargement more concerning include:
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Fever or chills
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Severe flank pain
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Reduced urine output
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Increasing creatinine
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Significant hydronephrosis
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Recurrent infection
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Blood in urine
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A suspicious mass
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Rapidly changing kidney function
These findings should be assessed promptly.
Kidney Enlargement and High Creatinine
If imaging shows an enlarged kidney and blood tests show elevated creatinine, the two findings should be evaluated together.
Possible explanations include:
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Acute obstruction
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Infection
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Acute kidney injury
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Cystic disease
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Other structural kidney disorders
However, an enlarged kidney does not itself prove that the creatinine is high because of the enlargement.
Previous kidney-function results are particularly useful in determining whether the change is new or longstanding.
Can Water Cure an Enlarged Kidney?
No.
Drinking an appropriate amount of fluid supports normal hydration, but water does not directly treat most causes of kidney enlargement.
If urine flow is blocked, drinking excessive amounts of water will not remove the blockage.
In some patients with advanced kidney disease or fluid retention, excessive fluid intake can actually be harmful.
Fluid intake should therefore be individualized according to the patient's medical condition.
What About Home Remedies?
There is no reliable home remedy that can treat every cause of kidney enlargement.
Patients should be particularly cautious with:
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Kidney detox drinks
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Unverified herbal preparations
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High-dose supplements
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Unprescribed medicines
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Extreme water intake
These approaches may delay appropriate treatment or potentially affect kidney function.
The safest approach is to identify the cause through appropriate medical evaluation.
When Is Kidney Enlargement an Emergency?
Seek urgent medical attention if kidney enlargement is associated with:
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High fever or chills
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Severe flank pain
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Persistent vomiting
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Very little or no urine
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Severe weakness
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Confusion
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Severe swelling
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Breathlessness
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Rapidly worsening symptoms
An infected obstructed kidney can deteriorate rapidly and requires prompt treatment.
Can Kidney Enlargement Be Prevented?
Not every cause of kidney enlargement can be prevented.
However, several measures can support urinary and kidney health:
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Maintain appropriate fluid intake.
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Manage blood pressure.
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Control diabetes when applicable.
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Seek treatment for recurrent urinary infections.
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Address kidney stones appropriately.
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Avoid unnecessary kidney-harming medicines.
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Attend follow-up appointments for known cystic or structural kidney conditions.
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Monitor kidney function when recommended.
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Do not rely on unproven kidney-detox products.
Prevention strategies should be individualized according to the underlying condition.
When Should You Consult a Nephrologist?
A nephrology consultation may be appropriate when kidney enlargement is accompanied by:
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Abnormal creatinine
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Reduced eGFR
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Protein or albumin in urine
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High blood pressure
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Recurrent urinary infections
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Persistent flank discomfort
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Polycystic kidney disease
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Unexplained changes on ultrasound
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Progressive kidney-function decline
If imaging suggests a surgical or structural urinary problem, coordination with a urologist may also be necessary.
Kidney Enlargement Evaluation at Prabhakar Bhurke Clinic
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized assessment for patients with abnormal kidney size, kidney-function changes and related renal conditions.
Depending on the clinical situation, evaluation may include:
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Review of ultrasound, CT or MRI findings
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Comparison of kidney size with previous imaging
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Creatinine and eGFR assessment
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Urine examination
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Assessment for protein or albumin in urine
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Evaluation of hydronephrosis
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Assessment of kidney stones
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Investigation of recurrent urinary infections
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Evaluation of cystic kidney conditions
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Monitoring of kidney function
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Coordination with appropriate urological or surgical specialists when required
The treatment plan is determined by the underlying cause rather than by kidney size alone.
Frequently Asked Questions About Kidney Enlargement Treatment
What is the treatment for an enlarged kidney?
There is no universal treatment. Management depends on the cause, such as obstruction, infection, stones, cysts, polycystic kidney disease or another structural condition.
Can an enlarged kidney become normal again?
It may improve when enlargement is caused by a reversible condition such as urinary obstruction or acute inflammation. Chronic structural enlargement may persist.
Is an enlarged kidney serious?
It can be harmless in some situations, but it may also indicate obstruction, infection or another significant condition. The cause needs to be determined.
Can kidney stones cause an enlarged kidney?
Yes. A stone blocking urine drainage can cause hydronephrosis, which may make the affected kidney appear enlarged.
Does an enlarged kidney mean kidney failure?
No. Kidney enlargement and kidney failure are not the same thing. Kidney function should be assessed using creatinine, eGFR, urine testing and other clinical information.
Can drinking more water reduce kidney enlargement?
No. Water does not remove most causes of kidney enlargement, and excessive fluid intake may be unsafe when obstruction, advanced kidney disease or fluid overload is present.
Which doctor treats an enlarged kidney?
A nephrologist evaluates medical kidney conditions and kidney function. A urologist may be required when enlargement is related to urinary obstruction, stones or another condition requiring a procedure.
Conclusion
Kidney enlargement treatment depends on the reason the kidney has become enlarged. An enlarged kidney may be associated with hydronephrosis, kidney stones, infection, cysts, polycystic kidney disease, compensatory enlargement or other structural abnormalities.
Because kidney size alone does not establish a diagnosis, evaluation may include imaging, creatinine, eGFR, urine testing and a review of symptoms and medical history.
Some causes can improve after appropriate treatment, while chronic structural conditions may require long-term monitoring and management.
If an ultrasound or CT report has shown an enlarged kidney, it is important to understand why the kidney is enlarged rather than attempting to treat the finding with water, supplements or home remedies.
For specialist evaluation of kidney enlargement and associated kidney-function concerns, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.
Medical Disclaimer
This article is intended for general educational and informational purposes only and should not be considered a substitute for professional medical diagnosis, treatment or personalized medical advice. Kidney enlargement is a finding rather than a specific disease, and its significance depends on the underlying cause. Do not start medicines, herbal remedies, supplements or excessive fluid intake based solely on this article. Treatment may require nephrology, urology or other specialist assessment depending on the cause. Seek urgent medical attention for severe flank pain with fever or chills, very little or no urine, persistent vomiting, severe weakness, confusion, severe swelling, breathlessness or rapidly worsening symptoms. Consult Dr. Sandip Prabhakar Bhurke or another qualified healthcare professional for an individualized evaluation and treatment plan.
