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Prolonged inflammation with simultaneous tissue destruction and repair.
Chronic = mononuclear cells + fibrosis.
Granuloma
An organised collection of macrophages formed in chronic inflammation.
Sarcoidosis
A disease of unknown cause in which clumps of immune cells (non-caseating granulomas) form in many organs, most often the lungs and lymph nodes.
Systemic Lupus Erythematosus
An autoimmune disease in which the body makes antibodies against its own tissues, damaging the skin, joints, kidneys and many other organs.