Fig. 18
From: Gastrointestinal perforation: clinical and MDCT clues for identification of aetiology
42-year-old patient with appendiceal perforation. Contrast-enhanced parasagittal reformatted image shows a dilated appendix (open arrowhead) containing an obstructive appendicolith (black arrowhead), reactive wall thickening of the ascending colon (*), surrounding fat stranding, as well as an abscess (ab) containing air-fluid levels