BTG2 and metastatic malignant neoplasm in the lymph nodes: As shown in Table 1, the clinicopathological factors of the patients, including gender, age, tumor length, tumor location, degree of tumor differentiation, presence or absence of vascular infiltration, nerve invasion, and lymph node metastasis (LNM), T-stage, TNM stage, and expression levels of NOX2 and BTG2, were subjected to chi-square tests.