EBUS TBNA After PET/CT in Diagnosing Patients With Stage I-IIA Non-small Cell Lung Cancer Evaluated for Stereotactic Body Radiation Therapy

PRIMARY OBJECTIVES: I. To assess the use of EBUS-TBNA after a PET/CT as a means of improving the accuracy of lymph node staging in patients considered for SBRT. SECONDARY OBJECTIVES: I. To assess the usefulness of PET/CT as a diagnostic test in identifying N1 versus N0 staging. II. To compare survival and recurrence rates in patients with discordant PET/CT and EBUS-TBNA. III. To describe EBUS-TBNA and SBRT related complications. OUTLINE: Patients undergo EBUS-TBNA before SBRT. After completion of study, patients are followed up at 6 weeks, then every 3 months for the first 2 years then twice a year for the following 3 years, and annually thereafter.