Ultrasonic diagnosis of biliary atresia: A retrospective analysis of 20 patients

Figure 1 Ultrasonography. A: Fibrous plaque of inversed triangular shape at the confluent site of right and left hepatic ducts; B: Longitudinal section of streak-shaped fibrous plaque at the confluent site of right and left hepatic ducts; C: Cross section of streak-shaped fibrous plaque at hepatic portal vein (arrow indicates fibrous plaque surrounding the right anterior area of the right branch of portal vein); D: Flat and small gallbladder with low tension. The thickness of capsule wall was uneven.