Pseudo-thrombus mechanism in left atrial appendage visualized via transthoracic echocardiography

[...]pericardial fluid was observed around the LAA (yellow arrow), causing it to collapse. [...]the pectinate muscle in the LAA was clearly observed by the pericardial fluid (yellow arrowhead), which visually resembled a thrombus on TTE The patient responded well to diuretics and antibiotics. Declar...

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