[Cancer of the prostate. Results and causes of failure after exclusive radiotherapy in 131 cases treated at in locoregional stage between 1972 and 1981].
A retrospective study was carried out to evaluate results of exclusively physical treatment by external radiotherapy of 131 cases of cancer of prostate treated between 1972 and 1981. Median follow up has been for 8 years in 19 cases (stage A), 61 cases (stage B) and 51 cases (stage C). Patients were treated exclusively by external irradiation after histopathologic diagnosis and assessment of possible extension of tumor. High energy photons were developed by a linear accelerator and irradiation carried out through four portals, two anteroposterior, two lateral, with precise guidance by rectal and bladder opacification. Irradiation delivered to a pelvic volume over 5 weeks was subsequently reduced to the prostate bed until a total dose of about 65 to 70 Gy has been given. Primary glandular chains received 60 to 65 Gy, and critical organs, bladder, rectum, small intestine a smaller dose of less than the tolerance levels for these organs. Clinical, biologic and scintiscan examinations were repeated every three months. Results are presented as actuarial survival, as survival without local recurrence and a detailed analysis of failure of treatment. The 8-year survival rate was 60% for stage A, 47% for stage B and 33% for stage C. Unsuccessful cases were evaluated in terms of isolated metastases, metastases associated with local recurrence and isolated local recurrence. The highest incidence of ineffectiveness of therapy was noted in patients with distant metastases (26%), the rate being higher (41%) in stage C cases than in stage B cases (19%).(ABSTRACT TRUNCATED AT 250 WORDS)
D000230:Adenocarcinoma / Q000532:radiotherapy; D000368:Aged; D002277:Carcinoma / Q000532:radiotherapy; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000209:etiology; D009367:Neoplasm Staging; D011379:Prognosis; D011471:Prostatic Neoplasms / Q000401:mortality / Q000473:pathology / Q000532:radiotherapy*; D011882:Radiotherapy, High-Energy / Q000009:adverse effects; D012189:Retrospective Studies
Cancer de la prostate. Résultats et causes d'échecs après radiothérapie exclusive dans 131 cas traités au stade loco-régional entre 1972 et 1981.