Ninety-five healthy volunteers and 515 patients with problems other than those of the biliary tract were examined using real-time, gray-scale, B-mode ultrasonography. Eighty-two patients (13.44%) were found to have asymptomatic gallbladder disease: 68 (11.14%) had cholelithiasis, 5 (0.81%) had acalculus cholecystitis, and 2 (0.32%) had polyps. Three cases… (More)
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