Abstract: ObjectiveTo retrospectively analyze the elderly patients with inoperable locally advanced squamous cell lung cancer, and determine prognostic factors. Methods According to eligibility criterion, 162 cases of elderly patients with inoperable locally advanced squamous cell lung cancer were selected from January 1, 2010 to January 1, 2015 in Shanxi Tumor Hospital. Related prognostic factors were carried on univariate and multivariate analysis with KaplanMeier approach and Cox regression, respectively. ResultsThe median age of 162 patients was 73.6 years old. The overall median survival time was 19.4 months. The 1year survival rate was 71.0%, and the 2year survival rate was 35.9%. In univariate analysis with KaplanMeier analysis method: age (χ2=7.94, P=0.005), Eastern Cooperative Oncology Group (ECOG) score (χ2=42.12, P=0.000), chemotherapy combined with radiotherapy or not (χ2 =14.99, P=0.000) were prognostic factors that influenced survival. Cox regression analysis showed that ECOG score (HR=0.30, 95%CI: 0.190.46, P=0.000) and N stage (HR=0.65, 95%CI: 0.440.95, P=0.026) were independent prognostic factors. ConclusionECOG score and N stage are independent prognostic factors of the elderly patients with inoperable locally advanced squamous cell lung cancer.

Key words: Carcinoma, nonsmallcell lung, Aged, Prognosis