an increasing trendP = 0.095
14 Lee et al demonstrated that PFS of the radiotherapy group was superior to that of the non-radiotherapy group (25 vs 8 months; P = 0.021), and OS showed an increasing trend in the radiotherapy group (29 vs 20 months; P = 0.095). 15 In this study, our data also demonstrate that OS and PFS were significantly associated with chemoradiotherapy: 13 months PFS and 18 months OS.