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Table 1 Demographic and clinical data, preoperative studies

From: Intraoperative parathyroid hormone (PTH) testing in patients with primary hyperparathyroidism and PTH levels in the normal range

  Group A (n = 9) Group B (n = 235) p value
Male 2 (22.2%) 34 (14.4%) 0.86
Female 7 (77.8%) 201 (85.6%)
Age (years) 51.5 ± 12.9 59.6 ± 12.5 0.06
Preoperative calcium (mg/dl) 11.2 ± 0.6 11.4 ± 1.2 0.64
Preoperative PTH (pg/ml) 55 ± 12.2 305 ± 301.1 0.013
Coexisting thyroid disease 3 (33.3%) 72 (30.6%) 0.84
Symptomatic PHP 7 (77.8%) 92 (39.1%) 0.048
- Cardiovascular disease 4 (22.2%) 41 (17.4%) 0.11
- Nephrolithiasis 2 (22.2%) 24 (10.2%) 0.55
- Osteoporosis 3 (33.3%) 22 (9.4%) 0.07
- Other 2 (22.2%) 25 (10.6%) 0.58
Preoperative studies    
- Concordant MIBI and US 6 (66.7%) 130* (64%) 0.84
- Discordant MIBI and US 3 (33.3%) 73* (36%)
  1. US: ultrasound; MIBI: 99mTc-Sestamibi scan. * On 203 patients who underwent preoperative both US and MIBI scan