CT shows multiple rectosigmoid diverticula, associated with wall thickening and stranding of adjacent fat. Free fluid is also seen in the abdominal cavity, as well as extraluminal gas foci (seen in the right upper quadrant, anteriorly to the transverse colon).
Non-related findings include lobar steatosis of the left hepatic lobe, mild aorto-iliac atherosclerosis and bilateral pleural effusions.