title: [Histiocytosis].
abstract: Current ideas about the histiocyte-macrophage system are briefly reviewed and the functions attributed to the system are defined. An anatomico-clinical classification of histiocytic diseases into four categories is suggested: - secondary of associated histiocytosis illustrating, in particular, macrophage function in immune response; - histiocytosis due to dystrophia or overload illustrating mainly phagocyte function and ability to store fats; - Langerhans histiocytosis characterized by the presence of numerous Langerhans cells. - Neoplastic histiocytosis, which is the only genuine malignant tumoral proliferation of the histiocyte-macrophage system.
mesh_terms: D001847:Bone Diseases / Q000473:pathology; D006099:Granuloma / Q000473:pathology; D006801:Humans; D007801:Langerhans Cells / Q000166:cytology; D008171:Lung Diseases / Q000473:pathology; D008206:Lymphatic Diseases / Q000145:classification* / Q000209:etiology; D010586:Phagocytes / Q000166:cytology* / Q000276:immunology; D011379:Prognosis
vernacular_title: Les histiocytoses.