Similar to the results of our study, MUC1 positivity had a higher rate of vascular invasion (odds ratio [OR] 1.64, 95% CI 1.13–2.39) and lymph node metastasis (OR 2.10, 95% CI 1.20–3.67) in this meta-analysis [18]. Here, MUC1 is linked to metastatic malignant neoplasm in the lymph nodes.