Last January, a team at the Champalimaud Clinical Centre, in Lisbon, successfully tested the precision of a novel, non-invasive, 100% digital method for locating cancerous breast tumours “on the fly” during surgery. For the first time in operating room settings, a surgeon fitted with an “augmented reality” headset was able to visualise, in real-time, a virtual image of the tumour to be extracted from inside the patient’s body.