PMC3513733_01
Ultrasound examination showing the presence of a retroperitoneal abscess with hyperechoic foci (spilled gallstones) (arrow).
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fig1
The patient underwent ultrasound examination which revealed an abscess cavity in the right retroperitoneal space, containing multiple hyperechoic foci (Figure 1).
CT scan showing a retroperitoneal abscess (arrow) due to retained gallstones.
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fig2
Due to the recent history of LC complicated with spilled gallstones, the diagnosis of a retroperitoneal abscess was suspected, which was confirmed by the computed tomography (CT) scan findings (Figure 2). 