담도협착은 복부 CT나 MRCP에서 담도관 협착 및 협착 주변부에서의 간내 관 확장현상이 관찰되고 혈청 빌리루빈, 알칼리인산분해효소, 글루타밀전달효소 등 간 생화학적 매개변수가 비정상적일 때 진단되었다.
Biliary stricture was diagnosed when stenosis of the bile duct and dilatation of the intrahepatic duct proximal to the stricture were observed on abdominal CT or MRCP and when liver biochemical parameters such as serum bilirubin, alkaline phosphatase, and glutamyl transferase were abnormal.