Ultrastructural and immunocytochemical studies have confirmed the validity of Lichtenstein’s idea of grouping Letterer-Siwe disease, Hand-Schüller-Christian disease and eosinophilic granuloma of the bone under the name of histiocytosis X. In addition pure cutaneous forms of histiocytosis X have recently also been described.
KeywordsDiabetes Insipidus Eosinophilic Granuloma Seborrheic Dermatitis Cytoplasmic Marker Malignant Histiocytosis
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