Figure 1 A 42-year-old woman presented with jaundice, right upper quadrant pain and pruritus.
Laboratory test findings were: hemoglobin (Hb) 11.1; bilirubin 4.6; aspartate aminotransferase
(AST) 34; alanine aminotransferase (ALT) 38; prothrombin time (PT) 16; and alkaline
phosphatase 1083. Abdominal sonography revealed dilatation of the intra- and extrahepatic
biliary ducts. Endoscopic retrograde cholangiopancreatography (ERCP) showed dilated
bile ducts with a large lobulated filling defect in the proximal portion of the common
bile duct toward the intrahepatic ducts. CBD, common bile duct; CHD, common hepatic
duct.
Figure 2 During surgery a pedunculated mass lesion was seen extending from the left hepatic
duct to the mid-portion of the CBD.
Figure 3 Histological investigation demonstrated a choledochal cystadenoma.
Endoscopy_UCTN_Code_CCL_1AZ_2AC