Large Thrombus Entrapped in a Patent Foramen Ovale during Inferior Vena Cava Filter Protection for Venous Thromboembolism

Figure 2

Preoperative TTE and CT findings. TTE showed dilatation of the right heart system and a newly mobile thrombus (white arrows) in the right atrium with protrusion into the left atrium through the PFO (yellow arrows (a)). CT showed extended thrombosis formation of the left main PA (yellow arrows) in addition to preexisting bilateral PE (white arrows (b)) and occluded IVCF by trapped venous thrombus (c). Yellow arrows indicated the trapped thrombus by IVCF. The thrombus was located at the proximal site of the IVCF. TTE: transthoracic echocardiography, CT: computed tomography, PA: pulmonary artery, PE: pulmonary embolism, IVCF: inferior vena cava filter, RA: right atrium, RV: right ventricle, LA: left atrium, LV: left ventricle, PFO: patent foramen ovale, Th: thrombus.

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(b)

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