Sanjay Popat, BSc, MBBS, FRCP, PhD, The Royal Marsden NHS Foundation Trust, London, UK, summarizes the key findings of the Lung ART trial (NCT00410683) which investigated postoperative conformal radiotherapy (PORT) in patients with completely resected non-small-cell lung cancer (NSCLC) and mediastinal N2 involvement. Treatment using adjuvant PORT was associated with a non-statistically significant 15% increase in disease-free survival (DFS). Prof. Popat discusses a potential benefit for the therapy in other patient groups. This interview was recorded via an online conference call with The Video Journal of Oncology (VJOncology).