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DOI: http://dx.doi.org/10.4081/thj.2005.1.565

Malignant diseases of hematopoietic and lymphoid tissues in Chernobyl clean-up workers

Daniel Gluzman, Nobutaka Imamura, Lylia Sklyarenko, Valentina Nadgornaya, Michael Zavelevich, Vasily Machilo

Abstract


Introduction: The question as to whether the incidence of leukemias and malignant lymphomas among the clean-up workers increased in 18 years after the catastrophe is still a point of much controversy. Precise diagnosis of the main forms of hematopoietic malignancies and comparison of these data with those in the general population will be helpful in estimating the relative contribution of the radiation factor to the overall incidence of such pathologies. Materials and methods: In all, 187 consecutive cases of malignant diseases of hematopoietic and lymphoid tissues in Chernobyl clean-up workers were analyzed in Ukrainian Reference Laboratory in 1996–2003. A total of 1942 consecutive patients of general population, mainly the residents of Kyiv city and district, diagnosed in Reference Laboratory at the same period comprised the group of comparison. The morphology and cytochemistry of bone marrow and peripheral blood cells were studied. Immunocytochemical techniques (PAP, APAAP, ABC) and the panel of monoclonal antibodies to differentiation antigens of leukocytes were employed for immunophenotyping leukemic cells. Results: Various types of malignant diseases of hematopoietic and lymphoid tissues were registered in Chernobyl clean-up workers under study including myelodysplastic syndromes (nine patients), acute lymphoblastic leukemia (eight) and acute myeloblastic leukemia (31), chronic myeloid leukemia (17), multiple myeloma (17) and other forms of chronic myeloproliferative and lymphoproliferative diseases including B-cell chronic lymphocytic leukemia (49 patients). Conclusion: The verified diagnosis of tumors of hematopoietic malignancies according to modern classification (EGIL, WHO) could be the prerequisite for further analytical epidemiology study of leukemias that may be related to the Chernobyl accident.

Keywords


Chernobyl clean-up workers; leukemias; cytochemistry; immunophenotyping

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Submitted: 2013-08-29 09:48:03
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