Intervention: All patients will undergo a CT scan and PET imaging. Primary Hypothesis: FDG-PET will be more accurate than existing anatomic modalities (chest x-ray and CT scan) in distinguishing between benign and malignant solitary pulmonary nodules (SPN)? This should expedite the removal of any potentially surgically curable malignant lesion and minimize the number of benign masses and surgically incurable lung neoplasms for which unnecessary thoracotomy is done. Secondary Hypothesis: What is the impact of the results of FDG-PET on the diagnosis made and treatment rendered by the referring physicians? What is the intra- and inter-reader reliability of FDG-PET? What is the effect of FDG-PET on the cost of early management of SPNs when FDG-PET is included in the management paradigm or substituted for CT?