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July 18, 1977

Hyperparathyroidism and Medullary Sponge Kidney

JAMA. 1977;238(3):212. doi:10.1001/jama.1977.03280030020009

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To the Editor.—  The article concerning the occurrence of hyperparathyroidism and medullary sponge kidney as presented by Gremillion et al (237:799, 1977) was of interest to me since I have a patient, a 50-year-old woman, who underwent excision of a parathyroid adenoma in April 1969. The intravenous pyelogram also disclosed the presence of brush-like appearance in the pyramidal portion of both kidneys, and this was thought to be consistent with medullary sponge kidneys. In addition, the patient has had numerous bouts of acute renal colic owing to the presence of a number of small calculi in both kidneys. The patient's serum calcium as well as urinary calcium levels have remained within normal limits since her surgery. Her parahormone level has also remained normal.It interests me also that perhaps there is more than just a chance relationship between the occurrence of hyperparathyroid disease and medullary sponge kidney.