granuloma

Sarcoidosis: Definition

Sarcoidosis is a disease in which the immune system forms many small clusters of inflammatory cells, called granulomas, in one or more organs. It most often affects the lungs and the lymph nodes in the chest, but it can also involve the skin, eyes, heart, liver, and other organs. Sarcoidosis is not cancer and is …
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Non-Necrotizing Granulomatous Inflammation: Definition

Non-necrotizing granulomatous inflammation means the pathologist found granulomas without dead tissue in their centers. Granulomas are small clusters of immune cells. They form when the immune system walls off something it cannot easily remove. Many conditions can cause this pattern, including sarcoidosis, Crohn’s disease, reactions to foreign material, and some infections. This finding is not …
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What is necrotizing granulomatous inflammation?

Necrotizing granulomatous inflammation is a specific pattern of long-standing or chronic inflammation seen under the microscope. It occurs when the immune system attempts to isolate and eliminate a harmful substance, such as an infection, foreign material, or a component of an autoimmune response. The word “necrotizing” refers to the presence of dead tissue in the …
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