Hyperbaric Oxygen Therapy to Improve Autologous Fat Graft Intake in Irradiated Breast

The goal of this clinical trial is to learn if hyperbaric oxygen therapy (HBOT) enhances fat graft survival in lipofilling procedures in irradiated breast cancer patients. The main questions it aims to answer are: Does it improve fat graft survival ? Evaluate safety and tolerability of HBOT in this setting? Researchers will compare patient receiving HBOT to a control group without HBOT to see if. Sixteen female patients will undergo two autologous fat grafting sessions: one with HBOT and one without, in a randomized sequence. Patients will undergo three MRI during the study to evaluate the fat retention rate.