Abstract
Thirty-three patients with prostatic carcinoma were treated with either estramustine phosphate, orchidectomy or high dose medroxyprogesterone acetate. Therapy response was evaluated by cytological examination of fine needle aspiration biopsies performed before and after 6 weeks treatment. At follow-up, 11 of 14 patients treated with estramustine phosphate had regressive and/or degenerative changes, in 2 patients there were no prostatic carcinoma cells in the smears and in one there was a marked reduction of the number of tumour cells. In 7 of 10 patients treated with orchidectomy there was a marked reduction of the percentage of malignant cells while smears from 3 patients were unchanged. In the 8 patients treated with high dose medroxyprogesterone acetate the cell patterns were unmodified compared with before treatment. We conclude that, in contrast to the lack of effect of treatment with medroxyprogesterone acetate, treatment with orchidectomy and especially estramustine phosphate caused morphologic cellular changes in prostatic carcinoma.
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