TG and thyroid nodule: The multivariate analysis showed that the maximum thyroid nodules diameter [odds ratio (OR) 2.323, 95% CI 1.383 to 3.904; p = 0.001], Tg level (OR 1.007, 95% CI 1.005 to 1.009; p = 0.000), Tg/sTg (OR 1.005, 95% CI 1.001 to 1.008; p = 0.009), and cytopathology (OR 9.738, 95% CI 3.678 to 25.783; p = 0.000) remained independent predictors for LLNM in PTC patients with suspicious LLNs (Tables 2–4).