Cardiac Magnetic Resonance Imaging Can Clearly Depict the Morphology and Determine the Significance of Cor Triatriatum

A 46-year-old asymptomatic woman with a history of breast cancer and chemotherapy treatment was referred for echocardiography examination as part of a preoperative assessment workup before orthopedic surgery to evaluate her left ventricular ejection fraction. Echocardiography showed a linear echodensity within the left atrium (LA) (Figure 1), but there was incomplete depiction of the spatial relationship between the echodensity and surrounding structures.Figure 1. Transthoracic echocardiogram in the apical 4-chamber view, showing a linear echodensity within the left atrium (arrow). However, the echocardiogram failed to delineate the spatial relationship between the echodensity and surrounding structures. RA indicates right atrium.Cardiac magnetic resonance imaging was performed to further characterize this structure. The cardiac magnetic resonance imaging protocol included several pulse …