title: [Reticulohistiocytosis of benign evolution (Hashimoto-Pritzker type). Electron microscopy study].
abstract: We describe a rare form of histiocytosis, characterized by numerous tumoral lesions of the skin appearing at birth and desappearing spontaneously within 2 month without visceral lesions and without systemic symptoms. Light microscopy shows histiocytes, some of which contain an irregular nucleus with a spumous cytoplasm surrounded by many red blood cells. Electron microscopy shows myelinoid inclusions in the histiocyte cytoplasm and "vermiform" bodies. In our opinion, a similar anatomoclinical entity was described for the first time and only once by Hashimoto and Pritzker.
mesh_terms: D006644:Histiocytes / Q000473:pathology / Q000648:ultrastructure; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D007223:Infant; D007231:Infant, Newborn; D008206:Lymphatic Diseases / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D012878:Skin Neoplasms / Q000473:pathology*
vernacular_title: Réticulo-histiocytose d'évolution bénigne (type Hashimoto-Pritzker). Etude en microscopie électronique