CDC25A and metastatic malignant neoplasm in the lymph nodes: The expression of CDC25a was significantly associated with IASLC/ATS/ERS classification of risk groups, differentiation, lymph node metastasis and TNM stage (p<0.001, p=0.007, p=0.026, p=0.033, respectively), but no not sex, ages, pleural invasion, distant metastasis, T state, operation mode and CEA.