Tag Dani S. Zer

Uncommon Histiocytic and Dendritic Cell Proliferations

Introduction The mononuclear phagocyte system includes monocytes, macrophages/histiocytes, and dendritic cells. Macrophages/histiocytes are tissue-based cells that have an important phagocytic function and produce a variety of bioactive substances that play roles in inflammation and fibrosis. Alveolar macrophages are a normal…

Other Interstitial Lung Diseases

Hypersensitivity Pneumonitis Hypersensitivity Pneumonitis—Fact Sheet Definition ▪ Diffuse interstitial granulomatous pneumonitis, caused by exposure to inhaled organic antigens or other particles of small size in susceptible individuals ▪ Large number of syndromes associated with specific triggering agents; major categories of…