Clinical presentation:
60 year old female with abdominal pain and recent diarrhoea.

The erect plain view shows irregular narrowing of splenic flexure and descending colon. The extreme length of involved bowel implies local lack of peristaltic activity. The irregular mucosal thickening has a typical "thumb print" appearance. The descending thoracic aorta is tortuous. Incidental costal cartilage calcification noted.

The enema confirms the appearance of mucosal thickening and localizes the affected bowel to distal transverse colon, splenic flexure and proximal descending colon.