It is very difficult to compare the therapeutic results of malignant testicular tumours because of the different histological classification systems, the uncertainty in the definition of the different stages, the error rate of the lymphography which amounts up to 35%, and the multitude of surgical, radiation, and chemotherapeutic methods. A histological classification and an exact determination of the stage is required as a condition of beginning a radiotherapy. The desirable focal dose for seminomas is between 4000 and 5000 rad, the maximum dose for teratomas is 6000 rad. For the stages T1-3N0 the iliac and the paraaortic lymph nodes are irradiated, for the stages T1-4N1-2 the interpleural space andthe supraclavicular region are included. For a group of 91 patients there was reached a five-year survival rate of 85,5% in case of seminomas and of 64% in case of teratomas.
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