Right Atrial Fibroelastoma Presenting as Typical Atrial Flutter: Rare Disease in Unusual Location

Figure 5

H and E stain of the excised right atrial mass showing fragments of the myocardium and multiple free floating papillary structures. The outer surface of these papillary structures is lined by endothelial cells. The stroma is fibroelastic with prominent myxoid changes. These findings are consistent with papillary fibroelastoma.