Endocrine Abstracts

There are limited data on the natural history of normocalcemic PHPT and it is unclear how the patients should be regarded vis a vis parathyroid surgery. Among the 1500 admissions/year for 10 years referred to our outpatient endocrine clinics for a variety of diseases, we collected 481 subjects with high serum levels of PTH. In the presence of hypercalcemia, a diagnosis of primary hyperparathyroidism was performed in 127 (26%). Other 354 (74%) subjects were normocalcemic: 186 (...