[Cutaneous lesions of malignant histiocytosis. About five cases (author's transl)].

Five cases of malignant histiocytosis are reported. They associate specific cutaneous lesions with the other much more classical symptoms of the illness; fever, weight loss, lymphadenopathy, splenomegaly, hepatomegaly. The principal clinical and histological findings observed during the course of the illness in these patients are described. In a review of the literature concerning this rare but now well individualized illness, 34 cases of malignant histiocytosis associated with cutaneous lesions are found among which 24 were studied on a clinical and histological point of view. The principal characteristics of the cutaneous eruption are presented: clinical characteristics with the most frequent nodular aspect of the lesions, but also histological features with the relative specificity of the disposition of the infiltrate whose cytological features will not be forgotten to analize. Nevertheless, the diagnostic will often be established by the histological analysis of the lymph node biopsy or sometimes of biopsy of the other affected organs. These cutaneous lesions might also be in several cases of some prognostic interest.