[Primary hyperparathyroidism].

Primary hyperparathyroidism was initially regarded as a rare and severe disease. In recent years, introduction of routine screening of serum calcium has contributed to a dramatic increased rate of detection of primary hyperparathyroidism in the population, and asymptomatic forms of this disease are now the rule. Surgery remains the only curative treatment. However a medical follow-up may be justified in asymptomatic patients whose serum calcium levels are only midly elevated and whose renal and bone status are close to normal. The medical follow-up is considered to be safe only with conscientious long-term monitoring. Surgery becomes mandatory if the follow-up shows worsening hypercalcemia, bone deterioration, renal impairment, calcium stone, or increased hypercalciuria.