Vasculitis involves inflammation and damage to blood vessels, which can be observed through various histological features:
- Inflammatory Infiltrates: Presence of immune cells such as lymphocytes, neutrophils, and macrophages within the vessel walls. - Fibrinoid Necrosis: Death of cells within the vessel wall, with deposition of fibrin-like material. - Granulomas: Formation of small nodular aggregations of inflammatory cells, often seen in specific types of vasculitis like giant cell arteritis.
