Molecular Markers in Predicting Lung Cancer Development Using Tissue Samples From Healthy Participants

OBJECTIVES: * To obtain biological specimens from healthy participants with no known risk of lung cancer to use as controls in the study of lung cancer progression. * To identify new molecular abnormalities specific to the development of squamous cell carcinoma of the lung. OUTLINE: Serum, urine, sputum, and buccal cell samples are collected. Patients also undergo bronchoscopy for collection of bronchial tissue and bronchial brush samples. The samples are used for genomic and proteomic studies to identify new molecular abnormalities specific to the development of lung cancer.