LIFE-Lung Bronchoscopy in Patients at Risk for Developing Lung Cancer

The purpose of the study is to evaluate the usefulness and accuracy of the "LIFE-Lung Bronchoscopy" to identify early changes in lung tissues that show precancerous, cancer in situ (just beginning and not spread) and microscopic invasive cancer lesions versus the ability of the standard "White Light Bronchoscopy" to identify the same. This will be done as a part of routine monitoring bronchoscopy. Patients who have had a surgical resection of non-small cell lung cancer (NSCLC) and with no current evidence of disease (NED) will be eligible. Also eligible are patients who have had head or neck squamous cell carcinoma with radical head and/or neck dissection and who are currently NED. Patients with severe chronic, obstructive, pulmonary disease shown by pulmonary function testing abnormalities will also be eligible. In addition to the specialized bronchoscopy, doctors will be investigating the use of imaging spectroscopy. This is using an optical (visualizing) procedure to measure the light reflected back from tissue. Different lesions and normal tissues reflect light differently and in specific color wavelengths. By using measurements over time (different examinations/bronchoscopies) very small changes can be seen. This may allow eventually for very early diagnosing of precancerous or cancer in situ lesions, allowing for earlier treatment.