The important thing when reading this case is not to call this an abscess. It is clearly communicating with the small bowel lumen, and upon closer inspection there are several other smaller non-inflamed jejunal diverticula along the mesenteric border. Thus it is important to be familiar with the appearance of small bowel diverticulitis, which I find often presents with much larger and more impressively inflamed diverticula than in the sigmoid colon, and that the diagnosis can be supported and confidently made when observing the presence of other non-inflamed small bowel diverticula.