A statistical comparison between survival and type of resection: Lobectomy and pneumonectomy was made out of 108 patients who had undergone curative resection for lung cancer (with a minimum 3 years follow-up). Analysis was first made on the whole series, then the patients were classified according to histological type (W-PL) or staging (TNM) and finally stratified in 2 control levels (stage and histological type). There was a better prognosis for lobectomy than for pneumonectomy, referring to a single subgroup, but not in a statistically significant way. There was a better prognosis for patients who had been operated for lobectomy S(2) 2 LOB with a 36 months survival for 85%. There were better results for squamous cell carcinoma stage I and II S(2) 1 PNE, for those patients who had been operated for pneumonectomy with a median survival of 32 months and over 3 years survival for 41.7%.