Figure 1.

Echocardiographic images of trapped thrombi in the PFO. (A) Initial transthoracic echocardiography shows a large hypermobile mass that was consistent with a thrombus trapped in a PFO. (B) Transesophageal echocardiography obtained 1 day after thrombolysis with intravenous alteplase shows a small remnant thrombus trapped in the PFO. (C) Repeat transesophageal echocardiography obtained after 1-month of oral anticoagulation therapy confirmed complete resolution of the thrombus trapped in the PFO, and (D) agitated saline test shows a positive result for the PFO.

PFO = patent foramen ovale.