[The state of the art: radiation therapy for non-small cell lung cancer]

The standard radiation schedule for non-small cell lung cancer is conventional fractionated 60-70 Gy/6-7 weeks in Japan, while a split-course or hypofractionated schedule is also used in some institutions in other countries. Hyperfractionated radiotherapy with/without chemotherapy is increasing while no definitive treatment schedule has been established as a standard treatment method. Dose escalation study by 3D-conformal radiotherapy is also an attempt at a breakthrough of radiotherapy in unresectable non-small cell lung cancer.