Fig. 15
From: Gastrointestinal perforation: clinical and MDCT clues for identification of aetiology
40-year-old patient with ileal perforation and unknown Crohn’s disease. Contrast-enhanced image shows fluid-filled fistulous ileoileal tracts (*), adjacent mesenteric phlegmon (arrowhead) and pockets of intraperitoneal free gas (arrows). Note mural thickening with stratification and mucosal hyperenhancement of the terminal ileum (within circle) compatible with active inflammation