[Role of cytological research methods in the diagnosis of lymphoproliferative diseases in children].

Emphasis is laid on the role and high information content of cytological research methods in early diagnosis of oncohematological diseases in children. The Soviet cytoimmunological classification scheme of lymphosarcomas is presented. The use of the scheme will be helpful in unifying the estimation of the tumor substrate in different clinics of this country and will make it possible to carry out cooperative studies. A detailed cytological analysis of differential diagnostic differences in histoproliferative diseases of tumorous and reactive nature is provided. The difficulties of differential diagnosis in cases of bone marrow lesion in neurogenic tumors and acute lymphoblastic leukemia are related. The necessity is stressed of the training of skilled personnel and employing cytologists on the staff of the laboratories of large children's hospitals.