IL6 and metastatic malignant neoplasm in the lymph nodes: The possible association between antioxidant capacity and patient-related features (sex, age, BMI, HGB, WBC, general health condition expressed in terms of ASA or CCS score, and inflammatory cytokines IL-1β, IL-6, and TNFα) as well as disease-related factors (histological grade, overall TNM stage, depth of tumor invasion (T), lymph node metastasis (N), and distant metastasis (M)) was evaluated.