A 65-year-old man presents with central abdominal pain radiating to the back, associated with nausea and vomiting. He appears unwell. A CT abdomen has been performed prior to review.

Abdominal pain

1. State two points to describe the CT findings and provide an interpretation of the image. 3 marks

2. List three methods of stratifying disease severity. 3 marks

3. List three common causes of this illness. 3 marks

4. List three complications of this disease. 3 marks