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Hematological complications in polycythemia vera and thrombocythemia patients treated with radiophosphorus phosphorus 32


, : Hematological complications in polycythemia vera and thrombocythemia patients treated with radiophosphorus phosphorus 32. Folia Haematologica (Leipzig) 117(3): 461-468

We have evaluated 230 patients with myeloproliferative disorders treated in the last 15 years with 32P. None of the patients affected by essential thrombocythaemia developed haematological complications. In the larger group of polycythaemia patients (214 subjects) only 38 patients (17 males and 21 females) developed complications. 60.5% of these subjects had a minor complications: 1.8% showed a thrombocytopenia lower than 100 .cntdot. 10e9/lt, 2.3% anaemia with Hb lower than 10 g%, 2.6% leukopenia lower than 40 .cntdot. 10e9/lt and 2.3% a pancytopenia. All these complications were transient and eventually treated with limited blood transfusions. We could not identify a correlation between the dose used and the development of such complications. We noted only that the occurrence of anaemia, given a similar dose, was more frequent in females. Only 7% of all patients presented a major complication after 32P administration. In this case too, there was no correlation with the dose administered. Myelofibrosis and chronic myeloid leukaemia resulted to be the more frequent complication (9 out of 15) but we could not clarify if they represented a natural evolution of polycythaemia vera or were due to the treatment with 32P. Acute leukaemia developed only in 5 patients and again we could not recognized a correlation with the dose administered. Moreover, the time from the diagnosis of polycythaemia vera the onset of acute leukaemia ranged widely. 32P has a definite effect on the prevention of thrombotic and haemorrhagic complications in polycythaemia patients since it prolongs their life but it also increases the incidence of acute leukaemia.

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