Fig. 15From: Gastrointestinal perforation: clinical and MDCT clues for identification of aetiology40-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 inflammationBack to article page