[Malignant histiocytosis and histiocytic leukemia in a boy treated for eosinophilic granuloma]

The paper presents a case of the acute histiocytic leukaemia and malignant histiocytosis in a boy treated of eosinophilic granuloma. We could not explain whether it was the question of the generalized basic disease or of a "secondary carcinoma" resulting from the applied radiotherapy.