PTH and parathyroid gland adenoma: The diagnosis of parathyroid adenoma was confirmed in 96.67% (29/30) of patients, and serum PTH (interquartile range) decreased from 721.70 (318.45, 1351.50) pg/ml to 15.22 (10.23, 37.28) pg/ml (normal range: 15–65 pg/ml), meanwhile the corrected SCa levels decreased from 15.40 ± 1.64 mg/dL to 11.16 ± 1.36 mg/dL.