case_images: PMC6489028_01
case_images: Endoscopic retrograde cholangiopancreatography demonstrating constriction of the main duct bifurcation and the prepapillary region (marked with arrows).
case_images: crg-0013-0153-g01.jpg
case_images: PMC6489028_01_crg-0013-0153-g01.jpg
case_images: F1
case_images: Interestingly, these findings were also present in the bifurcation of the DHC (Fig. 1).
case_images: Diameter of the main bile duct before prednisolone therapy initially measuring 12 mm (left panel) and following 4 days of prednisolone therapy with significant reduction to 6 mm (right panel).
case_images: crg-0013-0153-g02.jpg
case_images: PMC6489028_01_crg-0013-0153-g02.jpg
case_images: F2
case_images: His pain in the right upper abdomen completely disappeared and US examination after 4 days of treatment revealed a significant narrowing of the formerly enlarged bile ducts as well of the intra- and extrahepatic bile ducts (Fig. 2).
case_images: Magnification of 200-400x, section 1 stained with HE, section 2 after immunohistochemistry against CK7 showing destruction of the bile ducts and the formation of epithelioid cells around the bile ducts.
case_images: crg-0013-0153-g03.jpg
case_images: PMC6489028_01_crg-0013-0153-g03.jpg
case_images: F3
case_images: Histology of the liver specimen (Fig. 3) showed no signs of PSC.