Figure . A, B: transthoracic echocardiography, C, D, E, D: transesophageal echocardiography

Electrocardiogram and CXR were unremarkable. She underwent cardiac magnetic resonance imaging(CMR). Her CMR showed a round well defined mass attached to postero-superior RA wall with a stalk measured 10 x 11 mm without evidence of hemodynamic obstruction or compression. In the STIR/T2 weighted-sequences, the mass is low signal and in the T1 weighted-sequences with fat suppression images, the mass is low signal.  In the first pass perfusion sequence, the mass has neglible perfusion. In the early –enhancement imaging, the mass has no enhancement and in the late-enhancement-sequences, the mass has neglible enhancement. Due to MRI tissue characterization criteria, cardiac lipoma is the most likely diagnosis. As a result, we decided to observe the patient with close follow-up and not perform surgery on the patient. (Figure 2)