Abstract
Purpose : From 1956 to 1986, we have retrospectively studied 184 patients with a Stage I testis seminoma treated by orchidectomy and radiotherapy at the Institut Gustave Roussy. Methods and Materials : The 184 patients received adjuvant radiotherapy to the para-aortic and ipsilateral iliac nodes. Of the 184 patients, 133 received additional mediastinal and supraclavicular irradiation, 47 received supraclavicular without mediastinum irradiation, 98 patients received additional radiotherapy given to inguino-scrotal area. The mean dose of irradiation is 21 Gy which is the lowest dose published. The actuarial survival rate is, respectively, 96%, 93%, 83% and 77% at 5, 10, 15, and 20 years. Results : Four patients relapsed, and four died of progressive disease. Four patients presented cardiovascular disease, all of them had mediastinal irradiation, two were heavy smokers. Seventeen second malignancies were observed, sixtumors in the controlater testis. The actuarial risk of developing a second malignancy is 10% at 10 years, 21% at 20 years. The cure rate and relapse rate in our patients is the same as that obtained by higher dosage of irradiation. Conclusion : We conclude that low dose of prophylactic irradiation in lombo aortic and ipsilateral iliac lymph nodes is active and safe in the treatment of Stage I testis seminoma.
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