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A granuloma is a small clump of cells that forms when the immune system tries to fight off a harmful substance but cannot remove it from the body.
A necrotizing granuloma is an area of inflammation in which tissue has died. Necrotizing means dying or decaying. See: Necrotic
Tuberculosis and Wegener's granulomatosis are conditions that cause necrotizing granulomas.
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.