In contrast, statistical analyses indicated that ABCG2 expression was positively related with HER-2 expression and the correlation was statistically significant (p = 0.001); meanwhile, the correlation between ABCG2 expression and lymph node metastasis/clinical stage was significant (p = 0.049/0.015, respectively). The gene discussed is ABCG2; the disease is metastatic malignant neoplasm in the lymph nodes.