Hsp90ab1 protein expression level was positively associated with lymph node metastasis (Fig. 2b, χ2 = 23.421, P < 0.001), vascular invasion (Fig. 2b, χ2 = 4.343, P < 0.05), American Joint Committee on Cancer (AJCC) stage (Fig. 2b, χ2 = 17.889, P < 0.001) and T stage (Table S3, χ2 = 6.313, P < 0.05). The gene discussed is HSP90AB1; the disease is metastatic malignant neoplasm in the lymph nodes.