Cardiac lipomas are rare primary benign tumors of the heart. They make
up only 8.4% of primary heart tumors. (1) The etiology of these tumors
is not certain, but some publications have hypothesized that cardiac
lipomas are affected by HMGA2-LPP gene fusion. (2) Cardiac lipomas are
mostly asymptomatic and are detected incidentally in routine cardiac
screening tests. When cases are symptomatic, symptoms vary depending on
the location and size of the mass. For example, signs of stenosis and
arrhythmias occur when the tumor is in the superior vena cava. The most
common locations are the right atrium and left ventricle. In addition to
these locations, they can be seen in any intracardiac and epicardial
locations. Echocardiography and cardiac MRI can be used as diagnostic
methods. We report a very rare case of cardiac lipoma, which narrows the
right atrial inflow and extends to the superior vena cava.
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