 The left atrial appendage is interrogated, including with Doppler and color flow, and while there is good to-and-fro motion seen, echo smoke is seen, and in fact, an intracardiac thrombus is identified and circumscribed at 1.83 cm in circumference at the base of the left atrial appendage. 
The left atrial appendage is interrogated , including with Doppler and color flow , and while there is good to - and - fro motion seen , echo smoke is seen , and in fact , an intracardiac thrombus is identified and circumscribed at 1.83 cm in circumference at the base of the left atrial appendage .