The determination of the efficacy of this technique with this study could make an important contribution to the management of patients with pulmonary malignancies with high operative risk for resection. A minimally invasive alternative for tumor destruction could potentially improve quality of life by controlling local tumor progression and could provide longer survival when compared to current non-surgical options. This pilot study will determine the potential utility and effectiveness of RFA treatment of lung tumors, and whether to further evaluate this therapy in prospective randomized clinical trials compared to other conventional modalities.