Table 4. Correlation of BSRTC categories with BRAFV600E mutation and final diagnosis.
| BSRTC categories | n (%) | Surgery (%) | BRAFV600Emutation (%) | Malignant | Malignant Rate(95% CI) |
|---|---|---|---|---|---|
| I (Nondiagnostic) | 43 (19.5) | 20 (46.5) | 10 (23.3) | 12 | 27.9 (13.3–43.7) |
| II (Benign) | 38 (17.3) | 12 (31.6) | 3 (7.9) | 3 | 7.9 (1.7–21.4) |
| III (AUS/FLUS) | 33 (15.0) | 21 (63.6) | 14 (42.4) | 15 | 45.5 (28.1–63.7) |
| IV (FN/SFN) | 4 (1.8) | 4 (100.0) | 0 (0.0) | 3 | 75.0 (19.4–99.4) |
| V (Suspicious for malignancy) | 65 (29.5) | 65 (100.0) | 55 (84.6) | 64 | 98.5 (91.7–100.0) |
| VI (Malignancy) | 37 (16.8) | 37 (100.0) | 32 (86.5) | 37 | 100.0 (90.5–100.0) |
Abbreviations: AUS/FLUS, atypia of undetermined significance or follicular lesion of undetermined significance; FN/SFN, follicular neoplasm or suspicious for a follicular neoplasm; CI, confidence interval.