“…SBRT, a well-established method for the ablative treatment, can deliver large doses of radiation in a small number of fractions for RT treatments within sensitive surrounding organs such as the heart. Numerous case reports and small case series detailing their treatment of primary heart sarcomas have been published [3] , [5] , [6] , [13] , [16] ( Table 1 ). However, only a small number of cases utilized ultrahypofractionated SBRT [6] , [7] , and none utilized the simultaneous integrated boost technique to administer higher doses to gross lesions.…”