PMC3056364_01
USG of the left lower abdomen showing a hyperechoic arc (thick arrow) with a dense posterior acoustic shadow (thin arrows) in the location of the sigmoid colon
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F0001
USG revealed mild wall thickening in the region of the sigmoid colon with the presence of an intraluminal, curvilinear, hyperechoic arc-like surface casting a prominent posterior acoustic shadow [Figure 1].
USG with a high-frequency probe showing the individual seeds (between cursors) and mild wall thickening of the sigmoid colon (thin arrows)
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F0002
Scanning with a linear high-frequency probe revealed the arc to be composed of multiple, tiny 4-8-mm-sized hyperechoic shadows [Figure 2].
Axial contrast-enhanced CT scan showing the sigmoid colon seed bezoar along with the inflammatory wall thickening (arrows)
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F0003
Mild associated inflammatory changes were present with circumferential mural thickening (3-4 mm) and stranding of the pericolonic fat [Figure 3].
Volume-rendered CT scan showing the colonic seed bezoar (thick arrow) proximal to the sigmoid stricture (thin arrow)
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F0004
A tight, short segment stricture was seen immediately distal to the colonic bezoar [Figures 4 and 5].
Volume-rendered CT endoscopy image showing a tight sigmoid stricture (viewed from below)
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F0005
A tight, short segment stricture was seen immediately distal to the colonic bezoar [Figures 4 and 5].