Published: 19 June 2019
Author(s): Angelica Torres Morales, Andrea Guerrero Cignarella, Isma Safayeth Jabeen, Jamie S. Barkin, Mehdi Mirsaeidi
Issue: June 2019

IgG4-related disease (IgG4-RD) is an autoimmune disorder characterized by substantial infiltration of plasma cells with IgG4 in target organs. Lung manifestations predominantly present as inflammatory pseudotumor, interstitial pneumonitis, organizing pneumonia, and lymphomatoid granulomatosis. There is no specific diagnostic test for IgG4-related lung disease (IgG4-RLD), and excluding diseases that mimic IgG4-RLD is important. Corticosteroids with or without disease-modifying anti-rheumatic drugs are recommended for treatment.

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