[A contribution to the cytostatic long-term chemotherapy of polycythemia vera (author's transl)].

From 1967 to 1978 38 patients with polycythemia vera received a long term cytostatic chemotherapy. The results of 14 patients who were given Procarbacin (Natulan) during a mean treatment time of 9 1/2 years are communicated. Two patients showed secondary tumors after 9 or 11 years respectively. The advantages and disadvantages of the various therapeutic approaches in the management of polycythemia in the literature are discussed together with our own experiences.