Methods
With institutional approval, all BP-RMS patients treated by interstitial HDR-BT from 2014 to 2019 were included. Case records were prospectively collected. Patients were treated on the EpSSG RMS 2005 protocol[12]: after 3 cycles of chemotherapy (iFosfamide, Vincristine, Actinomycin D with or without Doxorubicin), the response to chemotherapy is appraised and local therapy options are considered on a case by case basis.