In 1980 at the Fourth International Symposium on Urolithiasis Research in Williamsburg, Virginia, we reported a surprisingly high prevalence of medullary sponge kidney (MSK) in patients with nephrolithiasis; 82 of our last 400 stone patients, an overall prevalence of 21%, had this disorder (1). Since then, two other groups of workers have also reported a high prevalence of MSK in stone patients. Sage et al. (2) found MSK in 17% of 200 randomlyselected stone patients, and Parks et al. (3) found the disorder in 12% of 624 male stone patients and 19% of 175 female stone patients.
KeywordsParathyroid Adenoma Stone Patient Excretory Urography Idiopathic Hypercalciuria Urinary Oxalate Excretion
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