Oncoplastic breast reconstruction after IORT

Prospective randomized clinical trials have shown that breast-conserving surgery followed by radiotherapy gives equivalent survival rates compared with mastectomy. The indications for breast-conserving therapy in breast cancer are expanding. The integration of oncoplastic surgery techniques with breast-conserving segmentectomy is a new approach that allows more extensive resections and results in more cosmetic favourable outcomes. During the last years we have defined five reconstruction principles in oncoplastic breast-conserving surgery. With these five principles we were able to perform more than 95% of all immediate reconstructions of partial mastectomy defects during breast-conserving surgery, resulting in optimized local and aesthetic outcomes. The oncoplastic reconstruction principles of partial mastectomy defects during breast-conserving surgery are as follows: glandular rotation, dermoglandular rotation, tumoradapted reduction mammoplasty, thoracoepigastric flap, Latissimus dorsi flap. Usually the whole breast is percutaneously irradiated after breast-conserving surgery. Depending on different risk factors, a local boost dose is applied to the tumor bed, which leads to a further reduction of local recurrences. Recently, the concept of intraoperative radiotherapy (IORT) as boost during breast-conserving surgery has been introduced internationally. From a surgical point of view intraoperative boost radiotherapy with a mobile device generating low-energy X-rays (Intrabeam (R)) can be combined with all oncoplastic principles for reconstructing partial mastectomy defects. The advantage of an oncoplastic reconstruction after breast-onserving surgery and IORT boost irradiation should be recommended to improve local outcome, to avoid seroma formation and to improve the cosmetic outcome after treatment.