Guidelines for Referral and Management of Renal Cysts

1. Indications for Interventional Radiology Referral

Percutaneous catheter drainage (PCD) and ethanol‑based sclerotherapy performed by interventional radiologists are the first‑line minimally invasive treatments for symptomatic simple renal cysts. 1
Patients who are poor surgical candidates should be referred to interventional radiology for minimally invasive percutaneous options. 2

Complex cystic renal masses classified as Bosniak III or IV require urologic evaluation for potential malignancy and possible definitive surgical management. 3
When percutaneous drainage fails, surgical drainage (open or laparoscopic) should be undertaken by a urologist. 1
Renal or perirenal abscesses that may need surgical drainage or nephrectomy are best managed by urology. 2
Evaluation of infected or complicated cysts for possible nephrectomy should be performed by a urologist. 1

Surgical drainage becomes necessary when PCD cure rates are inadequate, reported at 14–32 % for complex cysts, or when definitive surgical management is indicated. 2
Surgical approaches have lower recurrence rates (2.5–5 %) compared with percutaneous techniques, but they are associated with higher morbidity. 1