Between April 1962 and March 1984, 61 patients with a diagnosis of testicular seminoma were seen at Hahnemann University Hospital. Of these patients, 52 had long-term follow-up after definitive treatment with megavoltage irradiation. In 30 patients, disease was classified as stage I, in 21 patients, stage II, and in one patient, stage III. Treatment techniques are described. Overall relapse-free survival rate for all stages was 92% with an adjusted survival rate of 96%. Treatment policies for each stage are presented.