Spontaneous regression of hepatic inflammatory pseudotumor with primary biliary cirrhosis: Case report and literature review

Figure 1 A, B: Whole body F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) scan showed a 3-cm spherical mass in the right lobe of the liver. A:Coronal sectional view, B: horizontal sectional view. C: Enhanced CT showed a 3-cm spherical low-density mass (arrow) in the right lobe of the liver. D: Another enhanced CT performed 3 mo after targeted liver biopsy showed complete resolution of the mass.

Figure 2 A: Liver biopsy specimen from the non-tumorous liver. Histopathological findings are consistent with primary biliary cirrhosis. The enlarged portal tract with damaged bile ducts in florid lesion of non-suppurative destructive cholangitis is infiltrated by inflammatory mononuclear cells. H&E, X100. B: Liver biopsy specimen shows clear-cut boundary between the “tumor” and liver parenchyma. Azan-Mallory, ×100. C:The “tumor” is composed of chronic inflammatory cells including lymphocytes and plasma cells. H&E, × 400. D: The “tumor” is composed of fibrous tissue, thick hyalinized collagen bundles with disappearance of liver parenchyma. H&E, ×400.