title: [Extrahepatic cholestasis: the echographic and CT findings].
abstract: One hundred and fifty patients with jaundice and analytical suspicion of extrahepatic cholestasis were studied prospectively; history laboratory investigation and ultrasound examination were done in all. Computerized tomography was performed in 46 patients. Ultrasonography has a sensitivity of 92.6% while that of computerized tomography was 87.2% for the identification of dilated biliary ducts. Computerized tomography demonstrated the level of obstruction with a sensitivity of 89.1%, being most useful at the suprapancreatic and ampullary levels, while ultrasound examination had a sensitivity of 80%. The accuracy of ultrasonography was higher than the one obtained in computerized tomography in cholangiocarcinoma (sensitivity: 77%) and gallbladder carcinoma (sensitivity: 100%). Computerized tomography recognized choledocholithiasis (sensitivity: 83%) and ampullary carcinoma (sensitivity: 75%) with better accuracy. However for pancreatic carcinoma (sensitivity: 87%) and pancreatitis (sensitivity: 88%) both examinations had the same accuracy.
authors.affiliation: Servicio de Radiodiagnóstico, Hospital Miguel Servet de Zaragoza.
authors.forename: E
authors.initials: E
authors.lastname: Tobajas Asensio
authors.forename: M A
authors.initials: MA
authors.lastname: Simón Marco
authors.forename: J M
authors.initials: JM
authors.lastname: Artigas Martín
authors.forename: J A
authors.initials: JA
authors.lastname: Tobajas Asensio
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017734:Bile Ducts, Extrahepatic / Q000000981:diagnostic imaging*; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000295:instrumentation; D001651:Cholestasis, Extrahepatic / Q000000981:diagnostic imaging* / Q000209:etiology; D002780:Cholestasis, Intrahepatic / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000295:instrumentation; D014463:Ultrasonography / Q000295:instrumentation