The ideal chest radiotherapy dose/fractionation scheme for limited stage small cell lung cancer is undefined. Strategies of radiotherapy dose intensification with minimization of overall treatment time are felt to improve cure rates for LS-SCLC. Hypofractionation (giving higher than standard daily doses) facilitates both of these goals. In this study, we propose to use a dose escalated hypofractionated regimen of chest radiotherapy for patients with LS-SCLC.