[Significance of adjuvant radiotherapy in the surgical treatment of patients with non-small-cell lung cancer].

The study comprised 702 patients radically operated on for non-small cell cancer of the lung: surgery alone--351; radiation + surgery --110; (Eighty-seven patients of the latter group received an intensive course of radiation with a total target dose (TTD) of 20 Gy); surgery + fractionated radiation with TTD 50-55 Gy--195; radiation + surgery + radiation--46. No significant increase in overall or stage-related survival was registered for application of either modality as compared with controls. To establish indications for adjuvant radiotherapy, a prognostic factor study was undertaken using the regression model of Cox.