The authors report their experience with treatment of primary hyperpar
athyroidism in a series of 1496 patients (September 1991). The clinica
l profile of the disease has changed in the past few years, incomplete
or even asymptomatic forms of the disease are now more common. The re
sults of treatment have considerably improved (99% cure rate), progres
s is essentially due to two factors: surgeons have gained in experienc
e and diagnostic errors have disappeared thanks to the reliability of
laboratory tests and hormone level determination.