Extrahepatic biliary tract obstruction: a retrospective study of 45 cases (1983-1993)

Journal of the American Animal Hospital Association
M A Fahie, R A Martin

Abstract

The medical records of 41 dogs and four cats with either surgical or postmortem confirmation of extrahepatic biliary tract obstruction were reviewed. Clinical signs of icterus, vomiting, anorexia, or a combination of these signs were exhibited by 100% of cases. Elevated serum bilirubin was documented in 37 of 41 dogs and two of four cats (86.6%). The predominant, underlying, pathological process was extraluminal obstruction of the biliary tract due to pancreatitis (19 of 45 cases; 42.2%) or neoplasia (11 of 45 cases; 24.4%). Biliary tract surgery was performed in 29 cases, of which 12 (41.3%) recovered. Animals diagnosed with extrahepatic biliary tract obstruction had a relatively good long-term prognosis, provided they were not compromised substantially due to severe necrotizing pancreatitis or neoplasia.

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