(a & b) Contrast enhanced CT showed an extra atrial but intra pericardial filling defect with fat density. Still frames of SSFP 4-chamber (c) and coronal (d) cine images, showing an extra cardiac mass abutting the right atrium and located into the venae cavae. The corresponding coronal T1 mapping image (e) showing (blue) fat signal within the mass. SSFP, steady-state free precession.