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CT scan of the abdomen revealed free gas in the abdomen, free fluid in left iliac fossa and foreign body (arrowhead) penetrating at the sigmoid colon.
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After clinical evaluation in the emergency department, abdominal CT scan analysis revealed free gas in the abdomen, free fluid in left iliac fossa and lesser pelvis and a foreign body penetrating the mid-sigmoid colon (Fig. 1).
A green stent (arrow) was found penetrating the sigmoid colon.
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Emergency laparotomy was performed and a green plastic stent was found perforating the sigmoid colon through a diverticulum (Fig. 2, Fig. 3).