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Granuloma formation occurs in the human body if there is a particle which persists in phagocytes and which the immune system cannot eliminate. The immune reaction of granuloma formation evolved in order to combat mycobacteria with the aim of localizing mycobacteria and to avoid spreading of mycobacteria throughout the body. Granulomatous lung diseases are often accompanied by severe, systemic inflammation. However, acute phase proteins may be only slightly elevated. The spectrum of granulomatous lung diseases is broad. Sarcoidosis is the most common granulomatous lung disease. To diagnose sarcoidosis, other infectious granulomatous lung diseases such as tuberculosis, atypical mycobacterial and fungal infection have to be ruled out. Pulmonary granuloma also evolve in the context of autoimmune diseases such as rheumatoid arthritis, granulomatosis with polyangiitis (GBA, Wegener's) and eosinophilic granulomatosis with polyangiitis (EGPA, Churg-Strauss syndrome). Furthermore, immunodeficiencies such as common variable immunodeficiency (CVID) and immune reconstitution syndrome in HIV can be associated with systemic granulomatous inflammation. Finally, occupational lung disease, particularly hypersensitivity pneumonitis, silicosis, hard metal lung, and chronic berylliosis are associated with pulmonary granuloma formation.
Abteilung für Pneumologie, Universitätsklinikum Freiburg, Killianstr. 5, 79106, Freiburg im Breisgau, Deutschland.
This article was published in the following journal.
Name: Der Internist
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A syndrome characterized by progressive life-threatening RESPIRATORY INSUFFICIENCY in the absence of known LUNG DISEASES, usually following a systemic insult such as surgery or major TRAUMA.
Group of diseases mediated by the deposition of large soluble complexes of antigen and antibody with resultant damage to tissue. Besides SERUM SICKNESS and the ARTHUS REACTION, evidence supports a pathogenic role for immune complexes in many other IMMUNE SYSTEM DISEASES including GLOMERULONEPHRITIS, systemic lupus erythematosus (LUPUS ERYTHEMATOSUS, SYSTEMIC) and POLYARTERITIS NODOSA.
Pathological processes involving any part of the LUNG.
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