Phase II Evaluation of Ultra-Hypofractionated Postoperative Radiation Therapy for Breast Cancer: Toxicity and Efficacy in a Single-Center Nonrandomized Prospective Study.

Purpose: To evaluate the toxicity profile and efficacy of postoperative ultra-hypofractionated radiation therapy in elderly patients with breast cancer.

Materials And Methods: This is a nonrandomized, single-center, prospective Phase II trial. Patients with breast cancer older than 65 years were treated with ultra-hypofractionated radiation therapy in 5 fractions of 5.