Resumen
Endometrial cancer is the most common cancers of the female genital tract. However, the optimal adjuvant treatment for stage IB endometrial cancer is not well-defined. We aimed to study the benefit of modern adjuvant radiotherapy for women with stage IB endometrial cancer. We found that adjuvant external-beam radiotherapy significantly improved survival in patients with stage IB endometrial cancer. However, the benefit of adjuvant radiotherapy varied among the patients, suggesting that the treatment should be individualized.