Milk of calcium renal stone and renal pelvic cancer associated with hydronephrosis.

A 56-year-old male was admitted to a hospital because of gastric ulcer in 1967, and by chance he was diagnosed right milk of calcium renal stone associated with hydronephrotic kidney by plain abdominal X-ray film. In 1979, he was admitted to our hospital complaining of hematuria, and died from renal pelvic cancer on the 49th hospital day. Milk of calcium renal stone associated with hydronephrotic kidney is rare, with only 13 cases were reported previously. This is the first report, a case of milk of calcium renal stone associated with hydronephrosis died from renal pelvic cancer.