Xue et al reported a score that can help to identify a patient with parathyroid carcinoma prior to surgery. The authors are from Ruijin Hospital and Shanghai Jiao Tong University in China.
Patient selection: resection of an abnormal parathyroid gland
Parameters:
(1) serum total calcium in mmol/L
(2) serum intact PTH in pg/mL
(3) diameter of the parathyroid gland in cm
Parameter
Finding
Points
serum total calcium
> 3.12 mmol/L
1
<= 3.12 mmol/L
0
serum intact PTH
> 560 pg/mL
1
<= 560 pg/mL
0
diameter of the parathyroid gland
> 2.55 cm
1
<= 2.55 cm
0
total score =
= SUM(points for all 3 parameters)
Interpretation:
• minimum score: 0
• maximum score: 3
• The higher the score the greater the chance of malignancy.
Score
Percent Malignant
0
0%
1
10.1%
2
17.7%
3
45.5%
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