“…Reviewing recent literature revealed 1 report of an intramyocardial mesothelial inclusion cyst found in the left ventricle, although it was not pericardial in origin. 2 Another case involved a mesothelial cyst that was obstructing the RV outflow tract; however, this also did not originate from the pericardium. 3 Finally, assessing the symptomatology and hemodynamic impact of the mass are necessary to evaluate whether resection is necessary.…”