Proteomic Profiling in Diagnosing Non-Small Cell Lung Cancer in Patients Who Are Undergoing Lung Resection for Suspicious Stage I Lung Lesions

RATIONALE: Evaluating specific proteins in the blood may be an effective and noninvasive procedure to help doctors determine if a patient has early non-small cell lung cancer. PURPOSE: This clinical trial is studying proteomic profiling to see how well it works in diagnosing non-small cell lung cancer in patients who are undergoing resection for suspicious (abnormal) stage I lung lesions.