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Abstract
Estramustine phosphate (Estracyt®) was used in the treatment of 154 patients with carcinoma of the prostate in stage IV. Sixty-three patients were given Estracyt® from the outset (primary treatment group) and 91 had previously received some other endocrine therapy (secondary treatment group). All of the patients were observed for more than one year. The drug was given intravenously and/or orally. Objective remissions occurred in 46 (73.0%) of the 63 patients in the primary treatment group and subjective remissions in all the objective responders and in 12 additional patients (92.0%). The corresponding figures for the secondary treatment group were 28 (30.7%) and 52 (57.1%) of 91. The side-effects were negligible, and the drug was well tolerated. No cumulative toxic effect was observed in patients who had been receiving the treatment for more than five years. In our opinion the compound is valuable in the treatment of advanced prostatic carcinoma (stage IV).