Inferior mesenteric arteriovenous fistula: Two case reports

Figure 1 Multi-detector computed tomography scan. A: Multifocal low densities in the enlarged left kidney with ureteral dilatation, periureteric and perirenal fat stranding, and a suspected pelvic stone (arrow), indicative of acute pyelonephritis; B: Sigmoid colon diverticulitis with wall thickening (black arrow), pericolic fat stranding, and mild fluid collection (white arrow); C: Edematous, thickened, and hypoenhanced wall of the sigmoid colon with adjacent fat stranding (arrows) observed in the arterial phase; D: Long-segment colonic wall thickening with reduced enhancement, submucosal edema, pericolic fat stranding; E: Mild fluid collection extending from the splenic flexure to the upper rectum (black arrows); F: No communication observed between the inferior mesenteric artery (black arrow) and vein (white arrow).