Methods: Thoracic radiation therapy was administered in 2Gy fractions five times weekly to a total dose of 60 Gy.Concurrently, nedaplatin was given at a fixed dose of 75 mg/m2 on Days 1, and s-1 was given on Days 1-14,repeated every 4 weeks for four cycles. The dose of s-1 was initially 60 mg/m2/day and gradually increased to determine the MTD and RD of this regimen.