European Society for Radiotherapy and Oncology (ESTRO). ScienceDaily. Published online: 2 May 2016.
Image of photomicrograph showing testicular seminoma.
A large study of testicular cancer patients has shown that radiation therapy is a better treatment than chemotherapy for patients with stage IIa disease (where one or more regional lymph nodes contain cancer cells but they are less than 2cms in diameter).
These findings, presented at the ESTRO 35 conference today (Monday) and published simultaneously in Clinical Oncology, are important because, until now, there has been little evidence about which treatment for testicular seminoma is more effective, and there has been a tendency to move away from radiation therapy towards chemotherapy for treating stage IIa-b patients. Guidelines from the US National Cancer Comprehensive Network recommend radiotherapy for stage IIa, while those from the European Association of Urology allow for either radiation therapy or chemotherapy; both sets of guidelines are equivocal for stage IIb.
The study of 2,437 patients presented today is the largest group of patients with stage II testicular seminoma evaluated so far, and researchers found that 99% of patients with IIa disease were alive after five years if they had been treated with radiation therapy, versus 93% of patients treated with chemotherapy. For patients with IIb disease, the five-year overall survival was 95% for those treated with radiation therapy and 92% for those treated with chemotherapy.
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Read the original research abstract here