[Primary hyperparathyroidism in cases of urinary stone].

During the 5-year period from October, 1978 to September, 1983, primary hyperparathyroidism has been found at our clinic in 16 out of 395 cases of urinary stones (4.1%) and in 12.6% of the recurrent or multiple stone-forming patients. Plasma-ionized calcium level and rapid rapid calcium load test were most valuable in the diagnosis of primary hyperparathyroidism. It has been proved that neck surgery for primary hyperparathyroidism prevents recurrence of urinary tract stones.