Which ultrasound findings are diagnostic of cholecystitis?

Updated: Jan 18, 2017
  • Author: Peter A D Steel, MBBS, MA; Chief Editor: Barry E Brenner, MD, PhD, FACEP  more...
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Some ultrasonographers recommend the diagnosis of cholecystitis if both a ultrasonographic Murphy sign and gallstones (without evidence of other pathology) are present. In a study by Ralls et al involving 497 patients with suspected acute cholecystitis, the positive predictive value of the presence of stones and a positive ultrasonographic Murphy sign was 92% and that of stones and thickening of the gallbladder wall was 95%. The negative predictive value of the absence of stones combined with either a normal gallbladder wall or a negative Murphy sign was 95%. [16]

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