TNF and non-small cell lung carcinoma: Higher serum IL-10 and TNF-α levels we found in NSCLC with poor differentiation than in moderate to well differentiated NSCLC (17.99 (12.12–22.17) pg/ml vs. 15.38 (10.56–24.22) pg/ml and 13.84 (3.59–23.85) pg/ml vs. 10.68 (3.02–25.51) pg/ml; respectively, P < 0.05).