Data Collection of Prepectoral Breast Reconstruction With Polyurethane Implantes

The goal of this observational study is to learn about correct surgical indications and long-term complications in patient with immediate prepectoral breast reconstruction with polyurethane implants. The main question it aims to answer are: what are the correct indications for this type of reconstruction? what is the complications rates? are the complications affected by pre and post operative radiotherapy? It's a retrospective study of all the patients that received prepectoral breast reconstruction with polyurethane implants without any exclusion factors. Researchers will compare the non-irradiated group with the patients with pre and post radiation therapy.