Possible Role of Hormones in Treatment of Metastatic Testicular Teratomas: Tumour Regression with Medroxyprogesterone Acetate

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Abstract
Three patients in a consecutive series of 16 cases of metastatic mallgnant teratoma testis have shown well-marked tumour regression during hormone treatment. In two cases multiple lung metastases had previously failed to respond to actinomycin D therapy, and following treatment with medroxyprogesterone acetate one patient had well-marked selective tumour regression for nine months while the other is alive, well, and free from disease at seven years. The third case was treated with a combination of actinomycin D and medroxyprogesterone acetate and is alive and disease-free at two years. Attention is drawn to this preliminary study in the hope of stimulating interest in the possible value of hormones, either alone or combined with chemotherapy and irradiation, in the treatment of metastatic testicular teratoma. Multicentre prospective clinical trials are now needed if knowledge is to be advanced in this field.