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Patients with stage I lung cancer typically undergo lobectomies unless they have contraindications, such as significant cardiopulmonary comorbidities. In such patients, radiation therapy or less-extensive surgery (i.e., sublobar, wedge, or segmental resection) can be utilized. Stereotactic body radiotherapy (SBRT) allows precise, high-dose treatment of tumor tissue and is associated with high rates of local tumor control as well as short duration of treatment. Few data, however, directly compare outcomes after surgery versus SBRT. To address this issue, investigators evaluated recurrence and survival rates in 55 patients with stage I non–small-cell lung cancer who were treated with SBRT (as part of a prospective trial). These outcomes were …