PMC3830831_01
Abdominal X-ray showing air fluid level with a dilated loop of sigmoid colon.
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fig1
A plain abdominal X-ray showed a complete filling of the upper abdomen by a giant radiolucent mass with an air-fluid level (Figure 1).
((a), (b), and (c)) Abdominal CT showing air fluid level with a dilated loop of sigmoid colon.
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fig2
Computed tomography (CT) scan of the abdomen confirmed a large, 10 cm dilated air-containing cavity with air-fluid level but without filling of the cavity with orally or intravenously given contrast medium (Figures 2(a), 2(b), and 2(c)).
((a), (b)) Colonoscopy showing a large filled cavity lined by blackish appearing serosa (arrows).
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fig3
The scope was advanced into a narrowed area in the rectosigmoid region, and it entered into a large air-filled cavity lined by blackish appearing serosa (Figures 3(a) and 3(b)).