UFT maintenance after platinum base adjuvant chemotherapy for resected non-small lung cancer

INTERVENTION: UFT daily for 2 years CONDITION: Non‐small cell lung cancer PRIMARY OUTCOME: Completion rate of 2‐year UFT adminsitration SECONDARY OUTCOME: Safety, disease‐free survival duration,overall survival INCLUSION CRITERIA: 1) Histologically proven non‐small lung cancer. 2)Complete resection histologically. 3)Platinum base chemothrapy 1=< courses as prior adjuvant chemotherapy. 4)20 years old or older. 5)Performance status(ECOG)=0‐2 6)WBC>=2,000 and <=12,000/mm3 Neutrophil>=1,000mm3 Platlet>=75,000/mm3 T Bil<=1.5mg/dL AST/ALT<=100 IU/L PaO2>=70mmHg 7)Written informed consent