RT Journal A1 Tritos NA, Hartzband P T1 RApid improvement of osteoporosis following parathyroidectomy in a premenopausal woman with acute primary hyperparathyroidism JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1999 FD July 12 VO 159 IS 13 SP 1495 OP 1498 DO 10.1001/archinte.159.13.1495 UL http://dx.doi.org/10.1001/archinte.159.13.1495 AB We describe a premenopausal white woman with symptomatic acute primary hyperparathyroidism and marked osteoporosis. After undergoing a parathyroidectomy, the patient experienced not only rapid symptomatic relief, but also marked improvement in bone mineral density, which increased by 25% in the hip and by 22% in the lumbar spine 1 year after the surgery. Acute primary hyperparathyroidism should be considered in any patient with severe symptomatic hypercalcemia. Appropriate treatment with early parathyroidectomy can result in significant and rapid improvement in bone mineral density.