UROLOGY · CONDITIONS
Kidney Cyst
Fluid-filled sac within or on the surface of the kidney , usually benign, but complex cysts require classification and monitoring or surgical removal.
ABOUT THIS CONDITION
What is Kidney Cyst?
Renal cysts are extremely common , found in over 50% of adults over 50 , and the vast majority are simple Bosniak I cysts requiring no treatment. Complex cysts with internal septations, calcification, or nodularity (Bosniak III–IV) carry an increasing risk of malignancy and require intervention or close surveillance. The Bosniak classification guides all management decisions. Dr. Vipin evaluates all renal cysts with contrast-enhanced CT or MRI, assigns the Bosniak category, and recommends surveillance, aspiration sclerotherapy, or laparoscopic decortication as appropriate , avoiding unnecessary surgery while ensuring malignant lesions are treated promptly.
SIGNS TO WATCH
Common Symptoms
Symptoms that need attention
WHY IT HAPPENS
Causes & Risk Factors
- Tubular obstruction and dilation , primary simple cysts
- Polycystic kidney disease , genetic multiple cysts
- Medullary sponge kidney , medullary cyst formation
- Acquired cystic disease in dialysis patients
- Cyst from previous abscess or haematoma
- Complex cysts , some represent renal malignancy
CLINICAL DETAILS
KeyFacts
Simple cyst , completely benign. No follow-up imaging required. No treatment.
Minimally complex , benign. No follow-up required in most cases.
Intermediate risk (50% malignant) , surgical excision or laparoscopic decortication recommended.
High risk (>85% malignant) , treat as renal cell carcinoma. Partial or radical nephrectomy.
Follow-up with CT or MRI at 6 and 12 months. Annual imaging thereafter.
Aspiration sclerotherapy for symptomatic simple cysts , 30–40% recurrence rate.
HOW WE TREAT IT
Treatment Approach
Laparoscopic Cyst Decortication
The cyst wall is excised laparoscopically through small port incisions , the preferred treatment for large symptomatic or recurrent simple renal cysts, providing a permanent cure with very low recurrence rates.
- 1
CT / MRI Characterisation
Contrast-enhanced CT or MRI assigns the Bosniak category , the most important step in guiding management of any renal cyst.
- 2
Surveillance
Bosniak IIF cysts followed with imaging at 6 and 12 months, then annually. Any growth or new complexity prompts reassignment and intervention.
- 3
Aspiration Sclerotherapy
For large symptomatic simple cysts: ultrasound-guided aspiration and ethanol sclerotherapy , effective with 30–40% recurrence rate.
- 4
Laparoscopic Decortication
For symptomatic, recurrent, or complex cysts: laparoscopic unroofing provides permanent definitive treatment with minimal morbidity.
AVAILABLE TREATMENTS
Treatment Options
Laparoscopic Cyst Decortication
Laparoscopic unroofing of the renal cyst , definitive treatment for symptomatic, large, or recurrent simple cysts with very low recurrence.
Percutaneous Aspiration + Sclerotherapy
Needle aspiration and ethanol instillation under ultrasound guidance , less invasive but with higher recurrence (30–40%).
Open Decortication
Open unroofing through a flank incision for very large or complex cysts where laparoscopic access is not feasible.
COMMON QUESTIONS
Frequently Asked
Not sure about your condition?
Compassionate, confidential consultations — Book your appointment today.