Milk of Calcium Renal Stoneの1例

Abstract

A case of milk of calcium renal stone was reported. The patient was a 35-year-old housewife who had complained of intermittent dull flank pain on the left side for about two years. In the plain film taken with the patient on supine position, an oval calcific density was disclosed in the upper pole of the left kidney and with the patient on upright p03ition the oval shadow changed into a crescent shape, which was conceivable to be a typical sign of milk calcium. At the operation a cystic appearance was found in the upper pole of the left kidney, which contained milky stone and had no communication with calyceal system grossly. Postoperative chemical analysis revealed the milky stone composed of calcium phosphate. The cyst was histologically interpreted as a calyceal diverticulum.