Table 1 –

Characteristics of 41 patients with tertiary hyperparathyroidism.

Characteristic	n, median
Median age, y (IQI)	55 (49, 66)
Female gender (%)	17 (41)
Race
White	27 (66%)
Black	13 (32%)
Asian	1 (2%)
Median duration of dialysis, mo (IQI)	34 (6, 60)
Multiple renal grafts	5 (12%)
Prior parathyroidectomy	1 (2%)
Sequelae of hypercalcemia
Nephrolithiasis	2 (5%)
Bone density loss	18 (44%)
Systemic symptoms	23 (56%)
Median preoperative calcium, mg/dL (IQI)	10.4 (10, 11.2)
Median preoperative PTH, pg/mL (IQI)	172 (104, 293.3)
Median preoperative creatinine, mg/dL (IQI)	1.2 (0.9, 1.5)
Median GFR*, mL/min/1.73 m2 (IQI)	58 (49, 71)

GFR = glomerular filtration rate; MDRD = Modification of Diet in Renal Disease.

^*Calculated by MDRD.