CRP and lung cancer: The patient’s nutritional status is related to cancer prognosis and survival, such as body mass index (BMI), prognostic nutritional index (PNI, calculated by adding factorized albumin levels and lymphocyte counts), advanced lung cancer inflammation index (ALI, consisting of BMI, serum albumin levels and NLR), the C-reactive protein (CRP)-to-albumin ratio (CAR), and the CONUT score [10,11,12,13,14].