Primary Cardiac Angiosarcoma Treated With Positron Emission Tomography/Magnetic Resonance Imaging-Guided Adaptive Radiotherapy.

Radiotherapy (RT) for inoperable patients with primary cardiac sarcomas or residual tumor is often limited by the sensitivity of the heart and lung to radiation injury. We describe a novel treatment modality with adaptive radiotherapy (ART) using tumor volume tracking in a 37-year-old woman who presented with unresectable primary cardiac angiosarcoma. The patient was treated using positron emission tomography/magnetic resonance imaging-guided ART with 55.