MKI67 and metastatic malignant neoplasm in the lymph nodes: Significant associations were identified between Ki-67 LI > 5% and factors such as older age [OR (95% CI) = 4.5 (1.5–13.6), p = 0.012], advanced stage [OR (95% CI) = 7.6 (1.9–29.3), p = 0.004], aggressive histological subtype [OR (95% CI) = 11.8 (2.5–55.8), p < 0.001], lymph node metastasis [OR (95% CI) = 4.8 (1.5–15.1), p = 0.005], distant/organ metastasis [OR (95% CI) = 4 (1.2–13.4), p = 0.03], LVI [OR (95% CI) = 13.3 (2.8–62.7), p < 0.001], ETE [OR (95% CI) = 6.2 (1.9–19.6) p = 0.001], and BRAFV600E mutation [OR (95% CI) = 4.1 (1.2–13.9), p = 0.016].