Table 1:
Core-needle biopsy results and final diagnosis for initially detected thyroid nodulesa
| Total CNB (n = 2376) | Final Diagnosis (n = 1200) |
CNB <10 mm (n = 888) | Final Diagnosis (n = 455) |
CNB ≥10 mm (n = 1488) | Final Diagnosis (n = 745) |
||||
|---|---|---|---|---|---|---|---|---|---|
| Benign (n = 813) | Malignant (n = 387) | Benign (n = 232) | Malignant (n = 223) | Benign (n = 581) | Malignant (n = 164) | ||||
| Nondiagnostic | 117 (4.9) | 19 (2.3) | 8 (2.1) | 45 (5.1) | 4 (1.7) | 7 (3.1) | 72 (4.8) | 15 (2.6) | 1 (0.6) |
| Benign | 1549 (65.2) | 734 (90.3) | 8 (2.1) | 483 (54.4) | 218 (94.0) | 6 (2.7) | 1066 (71.6) | 516 (88.8) | 2 (1.2) |
| AUS or FLUS | 166 (7.0) | 44 (5.4) | 16 (4.1) | 55 (6.2) | 6 (2.6) | 9 (4.0) | 111 (7.5) | 38 (6.5) | 7 (4.3) |
| FN or SFN | 70 (2.9) | 16 (2.0) | 8 (2.1) | 18 (2.0) | 4 (1.7) | 1 (0.5) | 52 (3.5) | 12 (2.1) | 7 (4.3) |
| Suspicious for malignancy | 25 (1.1) | 0 | 21 (5.4) | 14 (1.6) | 0 | 12 (5.4) | 11 (0.7) | 0 | 9 (5.5) |
| Malignancy | 449 (18.9) | 0 | 326 (84.2) | 273 (30.7) | 0 | 188 (84.3) | 176 (11.8) | 0 | 138 (84.1) |
Note:—FN indicates follicular neoplasm; SFN, suspicious for a follicular neoplasm.
a
Data are the number of nodules with percentages in parentheses. Percentages do not add up to 100% because of rounding.