PMC3021307_01
Axial image demonstrates the "target sign" of an intussusception. Normal rectal wall (thin white arrow) is seen surrounding normal sigmoid mucosa (thin black arrow) as well as the enhancing sigmoid lesion (thick white arrow). In the center of the "target" is mesenteric fat (thick black arrow). Again seen is the fluid between the rectal wall and sigmoid and within the sigmoid between the sigmoid mucosa and the mesenteric fat.
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F1
Computed tomographic scan of the abdomen and pelvis showed a mass within the sigmoid colon and evidence of SRI (Figures 1 and 2).
Coronal image demonstrates a normal rectal wall (thin white arrow), normal sigmoid mucosa (thin black arrow), the enhancing mucosal lesion of the sigmoid (thick white arrow) acting as the lead point of the intussusception, and mesenteric fat (thick black arrow). Fluid is present within the rectum seen between the sigmoid mucosa and the rectal wall. Fluid can also be seen between the sigmoid mucosa and the mesenteric fat.
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F2
Computed tomographic scan of the abdomen and pelvis showed a mass within the sigmoid colon and evidence of SRI (Figures 1 and 2).
Intussusception of the proximal sigmoid colon (thick black arrow) into the rectosigmoid colon.
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F3
Diagnostic laparoscopy confirmed the diagnosis of intussusception (Figure 3).