Cardiac magnetic resonance imaging video—four chamber FIESTA imaging revealed an 11.5 cm × 5.1 cm × 4.8 cm mass within right ventricle centred on the basal intraventricular septum. Mass fills the right ventricle cavity, extends through the tricuspid valve into the right atrium, invading the myocardium of the intraventricular septum and right ventricular free wall.