A papillary fibroelastoma with myxoma camouflage
A 73-year-old woman patient with cardiac mass was detected in transthoracic echocardiography (TTE) after a transient ischemic attack. At TTE 2D-3D, a left intraventricular mass anchored at the level of the anterolateral papillary muscle was detected. Subsequently, cardiac magnetic resonance (CMR) was performed for mass characterization. This revealed behavior in T1 (isointense with respect to myocardium), T2 (hyperintense), very prolonged T1-mapping (1848 msg), and T2-mapping (161 msg) values, without gadolinium uptake in the first-pass perfusion sequence, but with intense uptake in late enhancement sequences. Previous findings were compatible with a diagnosis of papillary fibroelastoma. The mass was resected intraoperatively and, although its macroscopic appearance pointed to a diagnosis of cardiac myxoma, it was finally confirmed to be a papillary fibroelastoma by pathological anatomy.

Source: https://academic.oup.com/ehjcr/advance-article/doi/10.1093/ehjcr/ytac315/6651452?rss=1&login=true