Diagnosis and management of autoimmune pancreatitis: Experience from China

Figure 3 A patient with AIP, MRI imaging before treatment showed dilation of extrahepatic biliary ducts, thickening of hilar biliary wall (arrow) (A); and an enlarged mass in the head of pancreas (B); MRCP showed dilation of intra- and extra-hepatic biliary ducts, stricture of intrapancreatic and hilar bile duct, and segmental narrowing of main pancreatic duct (arrow) (C); after 1 mo of steroid therapy, the radiologic abnormalities resolved (D); The histologic findings of the pancreatic biopsy specimen include: dense fibrosis, diffusely lymphoplasmacytic infiltration, and acinar atrophy (HE, × 100) (E); the liver biopsy tissue also showed lymphoplasmacytic infiltration, cholestasis, and cloudy swelling of hepatocytes, especially at the portal area (HE, × 200) (F).