In the validation cohort, the combined model exhibited a higher predictive performance with an AUC of 0.835 compared to the clinicopathological model (AUC =0.792) and the ultrasound model (AUC =0.794), although these differences did not reach statistical significance (P=0.06 and P=0.11, respectively).
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Combined clinicopathological and ultrasonographic features for predicting extrathyroidal extension in thyroid cancer.
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