APAH features AIH-like lymphoplasmacytic inflammation with mild fibrosis. Shown are serial sections of a liver biopsy from a patient with APAH stained with (A) H&E, (B) trichrome, and immunostains for (C) CD3, (D) CD4, (E) CD8, and (F) CD20. Scale bar: 50 μm. Abbreviations: AIH, autoimmune hepatitis; APAH, APECED-associated hepatitis; H&E, hematoxylin and eosin.