Inflammatory pseudotumor of the liver and peripheral eosinophilia in autoimmune pancreatitis

Figure 1 A: CT demonstrated dilatation of the intrahepatic bile ducts, swelling of the pancreatic head, thickening of the gallbladder wall; B: CT revealed the liver mass, which was not enhanced by contrast medium.

Figure 2 Ultrasonography demonstrated hypoechoic liver mass.

Figure 3 MRCP showed stricture of the common bile duct with marked dilatation of the intrahepatic bile duct and irregular narrowing of the pancreatic duct.

Figure 4 Biopsy specimens from the liver mass showed lymphocytes, histiocytes, plasma cells, and a number of eosinophils. It did not contain normal liver tissue or malignant cells.

Figure 5 CT revealed that the pancreatic swelling almost resolved 1 mo after the treatment. Liver masses decreased.

Figure 6 MRCP demonstrated the normalized bile duct 6 mo after the treatment.