(a) Contrast-enhanced CT scan shows an ill-defined low density mass in the right ventricle. (b) The PET/CT fused image shows corresponding markedly increased avidity of the right ventricular mass. (c) Still frame from SSFP, CMR 4-chamber cine image shows a large mass filling the entire right ventricle with extension of small stalks through the tricuspid valve into the right atrium. (d) The late gadolinium enhanced image shows mild heterogeneous enhancement of the mass with some necrotic areas. (e) Post-operative PET/CT shows persistent avidity in the right ventricular wall. (f) Post-operative, still frame from right ventricular SSFP 3-chamber cine image shows residual irregular mass attached to the inferior right ventricular wall. CMR, cardiac magnetic resonance; PET, positron emission tomography; SSFP, steady-state free precession.