Overproduction of PTGS2 and the prostaglandins was observed in lung cancer and involved in lung carcinogenesis and progression via promoting angiogenesis, metastasis, and immunosuppression (Huang et al., 1998; Hida et al., 2000; Dohadwala et al., 2001; Mao et al., 2003). This evidence concerns the gene PTGS2 and lung carcinoma.