Relationship of the serum calcitonin level and the diagnosis of MTC after FNA or CNB proceduresa
| Calcitonin Level (pg/mL) | FNA Diagnosis (n = 158) | CNB Diagnosis (n = 18) | ||
|---|---|---|---|---|
| MTC | Non-MTC | MTC | Non-MTC | |
| ≥100 | 54 (54) | 46 (46) | 10 (10) | 0 (0) |
| 10–100 | 16 (16) | 27 (27) | 7 (7) | 0 (0) |
| <10 | 11 (1) | 4 (4) | 1 (1) | 0 (0) |
↵a Data are number of nodules before the operation, with the number of MTCs after the operation in parentheses.