In an article "Abdominal spilled stones: ultrasound findings." in Abdominal Imaging 2006 Jan 30; [Epub ahead of print] by Viera et al points towards the role of USG in spilled gall stones.
"Laparoscopic cholecystectomy (LC) is the treatment of choice for uncomplicated symptomatic gallstones. Spillage of stones due to gallbladder rupture has been reported in up to 33% of all LCs, but clinical sequelae caused by dropped gallstones are uncommon. Authors found that Abdominal US revealed hypoechoic focal lesions containing hyperechoic images with posterior shadowing of the liver and spleenand in the Morison pouch during a routine US examination. Their experience suggests that US can be very useful in the detection of gallstones spilled during LC."
"Laparoscopic cholecystectomy (LC) is the treatment of choice for uncomplicated symptomatic gallstones. Spillage of stones due to gallbladder rupture has been reported in up to 33% of all LCs, but clinical sequelae caused by dropped gallstones are uncommon. Authors found that Abdominal US revealed hypoechoic focal lesions containing hyperechoic images with posterior shadowing of the liver and spleenand in the Morison pouch during a routine US examination. Their experience suggests that US can be very useful in the detection of gallstones spilled during LC."
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