ERBB2 and metastatic malignant neoplasm in the lymph nodes: The HER2 expression was correlated with lower pT-stages (pT1/2 vs. pT3/4, p = 0.038), low-grade stages (G1/2 vs. G3/4 p = 0.041), and the absence of lymph node metastasis (pN0 vs. pN+, p = 0.020).