[Primary hyperparathyroidism. A retrospective study of 500 cases (author's transl)].

A retrospective study of more than 500 case-records of primary hyperparathyroidism was undertaken with the view of elucidating a number of problems raised in recent years: incidence of the disease, new clinical features, diagnostic methods and possible associations with other pathologies. The authors summarize the operative findings and the immediate or long-term results of surgical treatment, which on the whole are satisfactory and of long duration.