Research Article
Preoperative Cervical Lymph Node Metastasis Prediction in Papillary Thyroid Carcinoma: A Noninvasive Clinical Multimodal Radiomics (CMR) Nomogram Analysis
Table 1
Clinical characteristics of PTCs in the training and validation cohorts.
| Variable | Training cohort | Validation cohort | Statistics | value |
| Age (years) | 44.73 ± 13.6 | 44.59 ± 13.41 | 0.001 | 0.977 | Diameter (cm) | 1.27 ± 0.61 | 1.32 ± 0.68 | 0.42 | 0.526 | Gender | | | 0.279 | 0.598 | Female | 67 (71.28%) | 26 (66.67%) | | | Male | 27 (28.72%) | 13 (33.37%) | | | Location | | | 3.932 | 0.281 | Right lobe | 34 (36.17%) | 14 (35.90%) | | | Left lobe | 47 (50.0%) | 22 (56.41%) | | | Isthmus | 5 (5.32%) | 3 (7.69%) | | | Bilateral | 8 (8.51%) | 0 (0%) | | | Number_of_lesions | | | 6.11 | 0.137 | 1 | 71 (75.53%) | 37 (94.87%) | | | 2 | 17 (18.09%) | 2 (5.13%) | | | 3 | 3 (3.19%) | 0 (0%) | | | 4 | 2 (2.13%) | 0 (0%) | | | 5 | 1 (1.06%) | 0 (0%) | | | Tumor margin on T1WC+ | | | 1.91 | 0.167 | Well defined | 36 (38.3%) | 20 (51.28%) | | | Poorly defined | 58 (61.70%) | 19 (48.72%) | | | Thyroid contour protrusion sign on T1WC+ | | | 0.524 | 0.469 | Absent | 57 (60.64%) | 21 (53.85%) | | | Present | 37 (39.36%) | 18 (46.15%) | | | Aspect ratio on US imaging | | | 0.696 | 0.404 | <1 | 63 (67.02%) | 29 (74.36%) | | | >1 | 31 (32.98%) | 10 (25.64%) | | | Microcalcification | | | 0.115 | 0.735 | Absent | 44 (46.81%) | 17 (43.59%) | | | Present | 22 (53.19%) | 22 (56.41%) | | | MOGONET | 0.53 ± 0.50 | 0.56 ± 0.50 | 0.545 | 0.462 |
|
|
PTC, papillary thyroid carcinoma; LNM, lymph node metastasis. values of <0.05 were considered to indicate statistical significance. |