Affiliation: | Richard Oparka MBChB is a Specialty Trainee in Histopathology in the Department of Histopathology, Ninewells Hospital and Medical School, Dundee, UK. Conflicts of interest: none; Grant Stenhouse MBChB FRCPath is a Consultant Histopathologist in the Department of Histopathology, Ninewells Hospital and Medical School, Dundee, UK. Conflict of interests: none |