Introduction

Kidney cysts are fluid-filled sacs that develop inside or on the surface of the kidneys. Many kidney cysts are simple cysts that do not cause symptoms and are often discovered accidentally during imaging tests. However, some cysts may grow larger, become infected, bleed, or interfere with normal kidney function, leading to various kidney cyst problems.

Certain inherited conditions, such as Polycystic Kidney Disease (PKD), can cause multiple cysts to develop in both kidneys and may eventually lead to chronic kidney disease or kidney failure.

Early diagnosis and appropriate treatment are important to prevent complications and preserve kidney function.

At Prabhakar Bhurke Clinic, our super specialist nephrologist provides comprehensive kidney evaluations, advanced diagnostic testing, personalized treatment plans, dialysis guidance, kidney transplant evaluation, and long-term kidney care for patients with kidney cysts and other kidney disorders.

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What Is a Kidney Cyst?

A kidney cyst is a round or oval sac filled with fluid.

Kidney cysts are generally classified into two main types:

Simple Kidney Cysts

Simple cysts:

• Usually contain clear fluid

• Often occur with increasing age

• Rarely affect kidney function

• May not require treatment if asymptomatic

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Complex Kidney Cysts

Complex cysts may have:

• Thick walls

• Internal partitions

• Calcium deposits

• Solid components

These cysts require careful evaluation because some may need further investigation or treatment.

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Polycystic Kidney Disease (PKD)

PKD is an inherited condition in which numerous cysts develop in both kidneys, gradually enlarging them and reducing kidney function over time.

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Symptoms of Kidney Cyst Problems

Many kidney cysts cause no symptoms. When symptoms occur, they may include:

• Pain in the side or back

• Flank discomfort

• Upper abdominal pain

• Blood in the urine

• Frequent urinary tract infections

• Fever if a cyst becomes infected

• High blood pressure

• Enlarged abdomen (in some patients)

• Reduced kidney function

• Fatigue in advanced kidney disease

Persistent symptoms should always be evaluated by a nephrologist.

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Possible Complications

Kidney cyst problems may lead to:

• Cyst infection

• Bleeding into the cyst

• Ruptured cyst

• Urinary obstruction

• High blood pressure

• Chronic kidney disease

• Kidney failure (especially in PKD)

Early diagnosis helps reduce the risk of complications.

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Causes of Kidney Cysts

Kidney cysts may develop due to:

• Aging (simple cysts)

• Genetic disorders such as Polycystic Kidney Disease

• Congenital kidney abnormalities

• Long-standing kidney disease

• Dialysis-related kidney cyst formation in some patients

The underlying cause influences treatment and long-term follow-up.

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Who Is at Higher Risk?

The risk is higher in people with:

• Increasing age

• Family history of PKD

• High blood pressure

• Chronic kidney disease

• Previous kidney disorders

Regular kidney health screening is recommended for high-risk individuals.

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How Are Kidney Cyst Problems Diagnosed?

At Prabhakar Bhurke Clinic, our super specialist nephrologist performs a complete kidney evaluation.

Medical History and Physical Examination

Your doctor reviews:

• Symptoms

• Family history

• Medical history

• Current medications

• Blood pressure

• Lifestyle habits

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Blood Tests

Important investigations include:

• Serum Creatinine

• Estimated Glomerular Filtration Rate (eGFR)

• Blood Urea Nitrogen (BUN)

• Electrolytes

• Complete Blood Count (CBC)

These tests assess kidney function and detect complications.

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Urine Tests

Urine investigations may include:

• Routine Urinalysis

• Protein estimation

• Urine Microscopy

• Urine Culture (if infection is suspected)