For asymptomatic, incidentally found Lambl's excrescence, should long-term surveillance imaging be considered and if so, how often should repeat imaging be ordered?   

For small Lambl's excrescence (often characterized as less than 10mm) and found incidentally in asymptomatic individuals, there is no data to support repeat imaging or surveillance. For large/giant growths, or those in the setting of cryptogenic or embolic stroke, further imaging with TEE may be nee...