Defining Success of Parathyroidectomy in Hyperparathyroidism

ObjectiveTo clearly define what constitutes successful parathyroidectomy in patients with primary hyperparathyroidism and to review our institution's results.MethodsA retrospective chart review was conducted for consecutive patients who underwent parathyroidectomy at a university-affiliated tertiary care center between January 1998 and February 2006. Intraoperative pre- and post-excision PTH levels were recorded. PTH and calcium levels were recorded at 3 – 6 month intervals in the first 2 years and then yearly.Results84 patients were analyzed. 50 (60%) had normal calcium and normal PTH levels following surgery, 28 (33%) had normal calcium and elevated PTH following surgery, and 6 (7%) had both elevated calcium and PTH. The mean follow-up time was 2.23 years, with a range of 0.25 to 5 years.ConclusionsSurgery was successful, as indicated by normocalcemia, in 78 patients (93%). Of these 78 patients, 28 (33%) developed persistent PTH elevation without developing hypercalcemia. Other studies have studied this...