Urinary obstruction due to renal cysts.
D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D007674:Kidney Diseases / Q000209:etiology*; D052177:Kidney Diseases, Cystic / Q000150:complications*; D007682:Kidney Pelvis; D014517:Ureteral Obstruction / Q000209:etiology*