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ORIGINAL ARTICLE
Year : 2015  |  Volume : 11  |  Issue : 2  |  Page : 313-318

Adjuvant radiotherapy in stage 1 seminoma: Evaluation of prognostic factors and results of survival


1 Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
2 Department of Medical Oncology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey

Correspondence Address:
Emine Canyilmaz
Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, Trabzon
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-1482.140846

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Purpose: The purpose of this study was to evaluate the prognostic factors affecting overall survival (OS), cause-specific survival (CSS), progression-free survival (PFS), and survival among patients undergoing adjuvant radiotherapy (RT) for stage-1 seminoma. Materials and Methods: Between August 1997 and May 2013, 68 patients diagnosed with stage-1 seminoma were retrospectively evaluated. The median age was 39 (24-74) years. All patients received adjuvant RT after inguinal orchiectomy. Fifty-eight (85.3%) patients received paraaortic RT; 10 (14.7%) received dog-leg field RT. The median RT dose was 23.4 (23.4-30.6) Gy. Results: The median follow-up period was 77.5 (6.7-198.5) months. During the follow-up period, two patients developed distant metastasis, and none developed local recurrence. Two patients died from seminoma, and three died for other reasons. The 5, 10, and 15-year OS rates were 94.7%, 89.6%, and 89.6%, respectively. The 5, 10, and 15-year CSS rates were 98.5%, 96%, and 96%, respectively. The 5, 10, and 15-year PFS rate was 96.1%. The univariate analysis showed that only histological subtype was significant for OS. The 10-year survival rate was 100% among patients with seminoma histology, 90.8% among patients with a classic seminoma histology, and 50% among patients with an anaplastic seminoma histology (P < 0.001). A multivariate analysis showed that the anaplastic seminoma was a negative prognostic indicator for OS (P = 0.042). Conclusion: Adjuvant RT resulted in excellent long-term survival and local control in patients with stage-1 seminoma after orchiectomy. During a short follow-up, secondary malignancy (SM) and late cardiovascular morbidity were not observed. Despite those results, concern of SM and late cardiovascular morbidity remains.


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