Comparison between MRI and pathology in the assessment of tumour regression grade in rectal cancer - Sclafani, Francesco (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Brown, Gina (Department of Radiology, The Royal Marsden NHS Foundation Trust) ; Cunningham, David (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Wotherspoon, Andrew (Department of Histopathology, The Royal Marsden NHS Foundation Trust) ; Mendes, Larissa Sena Teixeira (Department of Histopathology, The Royal Marsden NHS Foundation Trust) ; Balyasnikova, Svetlana (Department of Radiology, The Royal Marsden NHS Foundation Trust) ; Evans, Jessica (Department of Radiology, The Royal Marsden NHS Foundation Trust) ; Peckitt, Clare (Clinical Research & Development, The Royal Marsden NHS Foundation Trust) ; Begum, Ruwaida (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Tait, Diana (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Tabernero, Josep (Universitat Autònoma de Barcelona. Departament de Medicina) ; Glimelius, Bengt (Department of Immunology, Genetics and Pathology, Section of Experimental and Clinical Oncology, University of Uppsala) ; Roselló, Susana (Department of Haematology and Medical Oncology, Biomedical Research Institute INCLIVA, University of Valencia) ; Thomas, Janet (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Oates, Jacqui (Department of Medicine, The Royal Marsden NHS Foundation Trust) ; Chau, Ian (Department of Medicine, The Royal Marsden NHS Foundation Trust)