Fig. 4

Liver biopsy confirmed the features of Caroli’s syndrome in the patient. Liver biopsy showed thick, bridging fibrosis with bile ductular proliferation and dilation (the black dots indicate the portal area; the red arrow shows dilated bile ducts), and fibrous bands traversed the hepatic parenchyma, forming nodules (non-regenerative; indicated by the white dots). Left, lower magnification; right, higher magnification