Renal cyst

A fluid-filled, epithelial-lined sac arising within or on the renal parenchyma.

Causes

• Benign age-related simple renal cyst

• Genetic polycystic kidney disease

• Acquired cystic kidney disease due to long-term damage/obstruction

  • Long-standing urinary tract obstruction

  • Chronic kidney disease

  • Long-term dialysis-associated cystic change