[New classification of tumor lesions of the hematopoietic and lymphatic tissues and use of these classifications in prosector practice].

The author presents a review of the world medical literature reports on the latest classifications of tumours of the hemopoietic and lymphatic tissues, based on new concepts of the hemopoiesis system. Changes in the interpretation of the meaning of such terms as "reticular cell", "reticulosis", reticulosarcoma", "hemocytoblastosis", and others are discussed. A contraversial nature of many new concepts and incompleatness of the discussion concerning the problem are emphasized. The author is one of the opinion that it would be better to abstain from the use of new classifications and from alterations in terms in practical work of pathologists before the appearance of a unified international classification of the tumours in question. Further studies of new theoretical aspects of the problem and continuation of detailed morphological, including histochemical, immunomorphological and other investigations of the substrate of tumour lesions of the hemopoietic and lymphatic tissues are recommended.