Radiology Quiz

Case history

This 55 year old recently redundant steelworker was admitted on an acute take at a local teaching hospital. This was one of many such admissions to hospital over previous years with similar complaints. His main complaints were of lower abdominal pain, weight loss of approximately 7 kg over the past month, and diarrhoea. He had been passing five loose motions a day, including one at night, which on many occasions had contained blood. On examination he is found to be tender in the left iliac fossa and a per rectum examination reveals blood. You also note raised, red nodules on his shins that he says are painful and have been present for the past three weeks. He has an eight year history of “arthritis.”

Given the consultant's knowledge of this man's history a barium enema was undertaken the following day. A section of the large bowel is …