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Arquivos de Gastroenterologia

Print version ISSN 0004-2803On-line version ISSN 1678-4219


PISANI, Julio Cesar et al. Comparative study between magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography in the diagnosis of the pancreatic and biliary obstruction. Arq. Gastroenterol. [online]. 2001, vol.38, n.3, pp.149-157. ISSN 1678-4219.

Background — The endoscopic retrograde cholangiopancreatography and magnetic resonance cholangiopancreatography were methods used for diagnosis of the diseases in the biliary and pancreatic ducts. Aim - Compare the diagnostic concordance among, analyzing sensitivity, specificity, positive predictive value, negative predictive value and accuracy. Patients/Methods - There were 41 patients in the studied group, divided in two groups: I — without biliary or pancreatic tract obstruction, and II — with obstruction. Group II was further divided in A — obstruction due to lithiasis, and B — due to other causes. Results - Concordance between the two methods was found in 67% in group I and 82% in group II. Sensitivity of endoscopic retrograde cholangiopancreatography was 94% and magnetic resonance cholangiopancreatography was 89%. Specificity of endoscopic retrograde cholangiopancreatography was 100% and magnetic resonance cholangiopancreatography was 67%. Magnetic resonance cholangiopancreatography positive predictive value was 93%, the negative predictive value was 50% and the accuracy was 85%. Conclusion - Both methods showed the same sensitivity.

Keywords : Magnetic resonance imaging; Cholangiopancreatography, endoscopic retrograde; Bile duct obstruction, extrahepatic [diagnosis].

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