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  • Title: Treatment of locally advanced prostatic carcinoma with LHRH analogues: cytological, DNA-cytophotometrical, and clinical results.
    Author: Borgmann V, al-Abadi H, Nagel R.
    Journal: Am J Clin Oncol; 1988; 11 Suppl 1():S19-28. PubMed ID: 2968759.
    Abstract:
    From June 1, 1981 to December 31, 1985, 122 patients aged 54 to 83 years, with locally advanced prostatic carcinoma, were treated with buserelin. Nineteen of the patients received combined therapy with buserelin and androcur for the first 3 months. To control the response of the primary tumor to therapy, fine-needle aspiration biopsy of the prostate was made in all patients at 3-month intervals. Fifty-eight (76.3%) of 76 patients with locally advanced prostatic carcinoma, with or without bone metastases, who underwent buserelin therapy for periods of 12-54 months showed good to satisfactory regression grades in the primary tumor. Eighteen patients (23.7%) showed poor regression or none, established by cytological findings and the measure of DNA by means of single cell-scanning cytophotometry. In three of the 58 patients, tumor progression or bone metastases occurred despite favorable regression grade; these were the only cases in which there was a discrepancy between the clinical course of the disease and the grade of regression in the primary tumor. According to TNM classification, 68 of the 78 patients treated for 12-54 months were in stage T3 NX M0; eight were in stage T3/T4 NX M1. On the basis of our long-term studies, it can be stated that buserelin therapy induces positive therapy response in more than 75% of locally advanced, inoperable, primary prostatic carcinoma. The clinical castration caused by buserelin through selective suppression of gonadotrophic secretion in the pituitary gland is, as the term implies, no more effective than surgical castration. However, the gonadotrophin suppression induced by buserelin is reversible and spares the patient the psychic stress of orchiectomy. This is a decisive advantage in light of the fact that in 20-40% of patients with locally advanced primary prostatic carcinoma, the primary tumor is hormone-refractory, and surgical castration would prove unnecessary after all.
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