CCR7 and metastatic malignant neoplasm in the lymph nodes: Higher expression (+++ to ++++, strong staining) of CCR7 was associated with AJCC staging (I-IIa vs IIb-IV, P = 0.008 < 0.05) and lymph node metastasis (negative vs positive, P = 0.003 < 0.05), but not with age, gender, histological grade, and classification.