Radiothérapie de lʹadénocarcinome prostatique de stade T1-T2 M0. Analyse des résultats carcinologiques dʹune étude multicentrique de 610 patients

SummaryPurpose pective analysis of the results of radiotherapy in localized prostatic adenocarcinoma. Complications were excluded. ts and methods ndred-and-ten T1-T2 adenocarcinomas of the prostate were treated with continuous courses of external beam radiation therapy in 19 participating Institutes between January 1983 and January 1988. The mean follow-up was 10.4 years; the mean age of patients at the beginning of radiotherapy was 68.5 years. s ear, local control had been achieved in 86% of T1-T2 (81.4% for T2). The 5-and 10-year metastatic relapse rates were 25.3% and 30% (29% and 38.1% for T2), respectively. At 10 years, 62.4% of T1-T2 were recurrencefree; overall survival rate was 45.8% and cause-specific survival rate was 70.5%; 29.9% of T1-T2 patients were alive and disease-free. T category (TNM), pathologic grade, pelvic lymph node status, local tumor control, and obstructive ureteral symptoms were correlated with survival. The influence of pelvic nodes radiation, dose, overall treatment time, previous endocrine treatment, and transuretral resection was not significant for disease-free survival (alive and disease-free) and other endpoints. sion was no difference between the French series (1975–1982 and 1983–1988). The results of the literature are comparable to ours. As far as prognostic factors are concerned, this report provides evidence that the explainable variables which influence survival depend on the tumor and patient status.