The VIOLET study (ISRCTN13472721) is a large  multicenter  randomized trial investigating video-assisted thoracoscopic surgery (VATS) vs open lobectomy for lung cancer We spoke to Eric Lim  MD  of the Royal Brompton & Harefield NHS Foundation Trust  London  UK  about the trial at the British Thoracic Oncology Group (BTOG) 2019 Annual Conference in Dublin  Ireland