BDNF and metastatic malignant neoplasm in the lymph nodes: According to the result of Spearman correlation analysis, lymph node metastasis (R = 0.479, p = 0.012), CA19-9 (R = 0.323, p = 0.023), CA125 (R = 0.287, p = 0.031) NLR (R = 0.304, p = 0.025), PLR (R = 0.563, p = 0.037) BDNF (R = 0.491, p = 0.018) and the CV (R = 0.671, p = 0.004) were positively correlated with the occurrence of ovarian cancer.