<prompt> Most common malignant tumor of heart in children is-RhabdomyomaRhabdomyosarcomaAngiosarcomaLipoma  <response>: Ans is b i.e. Rhabdomyosarcoma o Primary malignant cardiac tumors in children are almost exclusively sarcomas.o Located in the right side of the heart, atrial septum, right atrial wall, or root of the pulmonary artery. 