Introduction
Kidney scarring, also known as renal scarring, occurs when kidney tissue is permanently damaged due to infection, inflammation, injury, or long-standing kidney disease. Scarred areas of the kidney cannot function like healthy kidney tissue, and extensive scarring may gradually reduce overall kidney function.
Although existing scar tissue usually cannot be reversed, early diagnosis and appropriate treatment can help prevent further damage, preserve remaining kidney function, and reduce the risk of chronic kidney disease (CKD) and kidney failure.
At Prabhakar Bhurke Clinic, our super specialist nephrologist provides comprehensive kidney evaluations, advanced diagnostic testing, personalized treatment plans, and long-term care for patients with kidney scarring and other kidney disorders.
What Is Kidney Scarring?
Kidney scarring is the replacement of healthy kidney tissue with permanent scar tissue following injury or disease.
The kidneys contain millions of tiny filtering units called nephrons. Damage to these structures may lead to fibrosis (scarring), reducing the kidney's ability to filter blood effectively.
The amount of kidney function affected depends on the extent and location of the scarring.
Causes of Kidney Scarring
Kidney scarring may develop due to several conditions, including:
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Recurrent kidney infections (Pyelonephritis)
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Vesicoureteral reflux (VUR)
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Chronic kidney disease
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Diabetes
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High blood pressure
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Glomerulonephritis
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Kidney stones causing repeated obstruction
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Urinary tract obstruction
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Autoimmune kidney diseases
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Kidney injury or trauma
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Congenital kidney abnormalities
Early treatment of these conditions helps reduce the risk of permanent kidney damage.
Symptoms of Kidney Scarring
Some patients have no symptoms, particularly when scarring is mild.
When symptoms occur, they may include:
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High blood pressure
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Swelling of the feet, ankles, or face
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Fatigue
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Foamy urine
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Blood in the urine
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Frequent urination
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Reduced urine output
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Recurrent urinary tract infections
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Persistent flank or back pain
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High creatinine levels
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Reduced eGFR
Symptoms often depend on the amount of remaining kidney function.
How Is Kidney Scarring Diagnosed?
At Prabhakar Bhurke Clinic, our super specialist nephrologist performs a comprehensive kidney evaluation.
Medical History and Physical Examination
Your doctor will review:
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Symptoms
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Previous kidney infections
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History of kidney stones
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Diabetes
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Blood pressure
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Family history
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Current medications
Blood Tests
Important investigations may include:
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Serum Creatinine
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Estimated Glomerular Filtration Rate (eGFR)
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Blood Urea Nitrogen (BUN)
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Electrolytes
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Complete Blood Count (CBC)
These tests assess kidney function and identify complications.
Urine Tests
Urine investigations may include:
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Urinalysis
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Urine Protein Testing
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Urine Albumin-to-Creatinine Ratio (ACR)
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Urine Culture
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Urine Microscopy
These tests detect infection, protein leakage, and blood in the urine.
Imaging Studies
Imaging plays an important role in diagnosing kidney scarring.
Your nephrologist may recommend:
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Kidney Ultrasound
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CT Scan
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MRI when indicated
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DMSA Renal Scan in selected cases
These studies help identify scarred kidney tissue and evaluate overall kidney structure.
Kidney Biopsy
In selected patients, a kidney biopsy may be recommended to determine the underlying cause of kidney damage.
Kidney Scarring Treatment
Treatment focuses on preventing additional kidney damage, preserving remaining kidney function, and managing the underlying condition.
Treat the Underlying Cause
Treatment may involve:
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Managing kidney infections
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Controlling diabetes
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Treating high blood pressure
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Managing autoimmune kidney diseases
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Removing urinary obstruction
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Treating kidney stones
Early treatment helps reduce further scarring.
Blood Pressure Control
Maintaining healthy blood pressure is one of the most effective ways to slow kidney damage.
Your nephrologist may prescribe medications to protect kidney function.
Diabetes Management
Good blood sugar control is essential for patients with diabetic kidney disease and helps reduce ongoing kidney injury.
Medications
Treatment may include
