title: [Langerhans cell histiocytosis].
abstract: Langerhans cell histiocytosis (ex histiocytosis X) is usually present in children. It is a clonal proliferation of non-functional Langerhans's cells. Histological aspects are variable. The diagnosis is made in immunolabeling by anti-CD1a. Clinical presentations are variable, depending on their extension. Three syndromes are actually the same pathogenic process: eosinophilic granuloma (single or multiple osseous localizations), Hand-Schüller-Christian disease (chronic form with bone and visceral dissemination) and Abt-Letterer-Siwe disease (disseminated and acute malignant presentation).
authors.affiliation: Service de chirurgie maxillofaciale et stomatologie, hôpital Adulte de la Pitié-Salpêtrière, université Pierre-et-Marie-Curie Paris-6, 47-83, boulevard de l'Hôpital, 75651 Paris cedex 13, France. lbenslama@noos.fr
authors.forename: L
authors.initials: L
authors.lastname: Ben Slama
authors.forename: B
authors.initials: B
authors.lastname: Ruhin
authors.forename: A
authors.initials: A
authors.lastname: Zoghbani
mesh_terms: D006646:Histiocytosis, Langerhans-Cell / Q000145:classification* / Q000473:pathology*; D006801:Humans