[Primary hyperparathyroidism: clinical diagnosis].

During the period from June, 1959 to September 1983, 177 patients with primary hyperparathyroidism (PHPT) were treated in our Department. On the basis of this experience, a retrospective study has been made on the clinical diagnosis of PHPT. Repeated measurement of serum calcium, serum ionized calcium, serum phosphorus and %TRP was most useful for detecting patients with PHPT, in addition to careful observation of the many symptoms and disorders caused by PHPT. On the contrary, it is also stressed that PHPT can not be excluded even when a single measurement of any of the above stated items reveals a normal value.