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.

VariableTraining cohortValidation cohortStatistics value

Age (years)44.73 ± 13.644.59 ± 13.410.0010.977
Diameter (cm)1.27 ± 0.611.32 ± 0.680.420.526
Gender0.2790.598
 Female67 (71.28%)26 (66.67%)
 Male27 (28.72%)13 (33.37%)
Location3.9320.281
 Right lobe34 (36.17%)14 (35.90%)
 Left lobe47 (50.0%)22 (56.41%)
 Isthmus5 (5.32%)3 (7.69%)
 Bilateral8 (8.51%)0 (0%)
Number_of_lesions6.110.137
 171 (75.53%)37 (94.87%)
 217 (18.09%)2 (5.13%)
 33 (3.19%)0 (0%)
 42 (2.13%)0 (0%)
 51 (1.06%)0 (0%)
Tumor margin on T1WC+1.910.167
 Well defined36 (38.3%)20 (51.28%)
 Poorly defined58 (61.70%)19 (48.72%)
Thyroid contour protrusion sign on T1WC+0.5240.469
 Absent57 (60.64%)21 (53.85%)
 Present37 (39.36%)18 (46.15%)
Aspect ratio on US imaging0.6960.404
 <163 (67.02%)29 (74.36%)
 >131 (32.98%)10 (25.64%)
Microcalcification0.1150.735
 Absent44 (46.81%)17 (43.59%)
 Present22 (53.19%)22 (56.41%)
MOGONET0.53 ± 0.500.56 ± 0.500.5450.462

PTC, papillary thyroid carcinoma; LNM, lymph node metastasis. values of <0.05 were considered to indicate statistical significance.