To evaluate the diagnostic performance of combining sonographic features with BRAFV600E mutation for differentiating benign and malignant Bethesda category Ⅲ thyroid nodules.
This retrospective cohort study included 275 patients (278 nodules) diagnosed as Bethesda category Ⅲ by ultrasound-guided fine needle aspiration cytology (US-FNAC) at First Affiliated Hospital of Army Medical University between January 2020 and December 2024, with final confirmation via surgical pathology or repeated US-FNAC. Nodules were classified as benign or malignant based on pathological results. Diagnostic efficacy of age, sex, 9 sonographic features, ACR TI-RADS score, US-FNAC nuclear morphology, and BRAFV600E mutation was analyzed using multivariate logistic regression.
Significant differences existed in age, nodule margin, aspect ratio, maximum diameter, echogenicity, Adler blood flow grading, ACR TI-RADS classification, US-FNAC nuclear morphology, and BRAFV600E status between benign and malignant nodules (all P<0.05). Independent risk factors for malignancy included age≤52 years (OR=7.444), BRAFV600E mutation (OR=108.218), ground-glass nuclei (OR=5.389), and abnormal cervical lymph nodes (OR=13.351, P<0.05). The combined model demonstrated accuracy was 0.823, sensitivity was 0.863, specificity was 0.925, positive predictive value was 0.977, negative predictive value was 0.649, and AUC was 0.955.
Integration of sonographic features and BRAFV600E mutation provides high diagnostic performance for Bethesda category Ⅲ thyroid nodules.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |