Die kooperative Therapiestudie für nichttestikuläre Keimzelltumoren MAKEI 83 der GPO: Analyse nach 3 Jahren*/**

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Abstract
The German Society of Pediatric Oncology has initiated in 1983 a cooperative trial for the treatment of extratesticular germ cell tumors. The treatment plan is stratified according to histology, tumor site and tumor extension. Patients with unfavourable histology received depending on prognostic factors 4 courses of either vinblastine, actinomycin D and cyclophosphamide, or the combination of vinblastine, bleomycin and cisplatinum (4 courses) completed by 4 additional courses of VP 16, ifosfamide and cisplatinum. Within 3 years, 115 patients from 37 different institutions were entered into the trial. 55 of 72 protocol patients are under observation for at least 10 months since diagnosis. The disease-free survival rate according to Kaplan-Meier is 80% (+/- 6%) at 36 months. From the interim results of this ongoing study, the following conclusions are drawn: The chemotherapeutic regimens as delivered are tolerable. Radiotherapy does not seem necessary with the exception of ovarian dysgerminomas stage I a. In coccygeal teratomas the resection of the coccygeal bone decreases the hazard of local recurrences. Using the risk adapted regimen, the prognosis for teratomas with Yolk sac origin appears as favourable as for patients with mature teratomas.

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