Abstract
A patient with a right upper lobe lung mass presented with a stroke and peripheral embolism. A left atrial mass prolapsing through the mitral valve was seen on transthoracic echocardiogram, but it remained undiagnosed. Transoesophageal echocardiography (TEE) enabled the origin of the left atrial mass ( Panels A and B , Supplementary data, Video 1 ) to be traced to the right upper pulmonary vein. Doppler interrogation of the right upper pulmonary vein suggested a total occlusion. The elongated, multilobular, friable appearance, and the origin of the mass from …
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