Neo-Adjuvant Gemcitabine and Cisplatin in Treating Patients With Early Stage of Non Small Cell Lung Cancer

Inclusion Criteria: * define histologic or cytologic diagnosis of non small cell lung cancer. * determine the presence of clinical Stage IB, IIA-B or IIIA disease in accordance with the revision by Mountain CF of American Joint Committee on Cancer. * define performance status of 0-1 on ECOG scale * do not have any prior tumor therapy * to be suitable for curative resection Exclusion Criteria: * to have any treatment within the last 30 days with any investigational drug. * to get concurrent administration of any other tumor therapy * to be pregnant * to have poorly controlled diabetes mellitus * to have serious concomitant disorders.