CD79A and metastatic malignant neoplasm in the lymph nodes: Experiments of the entire dataset using RFE-SVM analysis identified ten informative variables, including three clinical indexes (oligometastases, N stage, and extraregional lymph node metastasis) and seven hematological markers (EB-VCA IgA, neutrophil count, monocyte count, platelet count, hemoglobin, glutamic-pyruvic transaminase, and glutamyltranspetidase).