Non-X histiocytosis

Non-X histiocytoses are a clinically well-defined group of cutaneous syndromes characterized by infiltrates of monocytes/macrophages, as opposed to X-type histiocytoses in which the infiltrates contain Langerhans cells. Conditions included in this group are:


 * Juvenile xanthogranuloma
 * Benign cephalic histiocytosis
 * Generalized eruptive histiocytoma
 * Xanthoma disseminatum
 * Progressive nodular histiocytosis
 * Papular xanthoma
 * Hereditary progressive mucinous histiocytosis
 * Reticulohistiocytosis
 * Indeterminate cell histiocytosis
 * Sea-blue histiocytosis
 * Erdheim–Chester disease