Japanese Lung Cancer Registry Study: First Prospective Enrollment of a Large Number of Surgical and Nonsurgical Cases in 2002

PurposeTo investigate prognoses of lung cancer patients prospectively enrolled in the Japan Lung Cancer Registry Study.MethodsPatients newly diagnosed as having lung cancer exclusively in 2002 were enrolled. Follow-up surveys were performed twice, in 2004 and 2009, and the final follow-up data with prognoses were analyzed for 14,695 patients (79%). Clinical stages were defined according to the sixth edition of the International Union Against...