Adnan Raja1, Anthie Papadopoulou2, Roopinder Gillmore3. 1. Department of Oncology, Royal Free London NHS Foundation Trust, London, UK. 2. Department of Radiology, Royal Free London NHS Foundation Trust, London, UK. 3. Department of Oncology, Royal Free London NHS Foundation Trust, London, UK. Electronic address: r.gillmore@nhs.net.