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 Indian J Med Microbiol  
 

Figure 2 (A– D): Axial CT scan of the abdomen (A) shows a dilated loop of the sigmoid colon with a thinned-out wall (thin arrow). There is medial deviation of the cecum with a pointed medial border (thick arrow). Notice the normal intervening ascending colon (dotted arrow). (B) Caudal CT scan section shows the whirl sign (within the circle) created by the twisted mesentery and bowel (branches arising from the superior mesenteric artery are present in the whirl). There is medial deviation of the distal descending colon with a pointed medial border (thick arrow). Fluid-filled ileal loops with thin non-enhancing walls are seen (dotted arrow). (C) A more caudal CT scan section shows efferent limbs of the sigmoid colon (thick arrow) and the ileal loop (dotted arrow) with appearances of a beak. The whirl sign is present on this section as well (thin arrow). A further caudal CT scan (D) shows fluid-filled ileal loops in the pelvis with thin non-enhancing walls (solid arrow) and free fluid present in the pelvic cavity (dotted arrow)

Figure 2 (A– D): Axial CT scan of the abdomen (A) shows a dilated loop of the sigmoid colon with a thinned-out wall (thin arrow). There is medial deviation of the cecum with a pointed medial border (thick arrow). Notice the normal intervening ascending colon (dotted arrow). (B) Caudal CT scan section shows the whirl sign (within the circle) created by the twisted mesentery and bowel (branches arising from the superior mesenteric artery are present in the whirl). There is medial deviation of the distal descending colon with a pointed medial border (thick arrow). Fluid-filled ileal loops with thin non-enhancing walls are seen (dotted arrow). (C) A more caudal CT scan section shows efferent limbs of the sigmoid colon (thick arrow) and the ileal loop (dotted arrow) with appearances of a beak. The whirl sign is present on this section as well (thin arrow). A further caudal CT scan (D) shows fluid-filled ileal loops in the pelvis with thin non-enhancing walls (solid arrow) and free fluid present in the pelvic cavity (dotted arrow)