Moderate versus ultra-hypofractionated locoregional breast radiotherapy: Results of a retrospective study during the covid-19 era.

Purpose: The use of ultra hypofractionated adjuvant breast radiotherapy for elderly patients was extended during the covid-19 pandemic. We compared its efficacy and safety versus moderate hypofractionation in elderly patients with breast cancer receiving locoregional radiotherapy at a single radiotherapy centre.

Methods: This retrospective analysis utilized routine patient data.