Giant right atrial thrombus unmasking Behçet’s disease: A rare cardiovascular manifestation

Figures

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  Fig. 1. Coronal contrast-enhanced chest CT image showing a hypodense intraluminal filling defect (white arrow) within the superior vena cava (SVC), consistent with thrombotic occlusion. The superior vena cava appears partially obstructed, with extension of the thrombus along its course.

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  Fig. 2. Contrast-enhanced axial chest CT image showing a large hypodense intracavitary filling defect within the right atrium (RA), consistent with thrombus. The lesion measures approximately 4.03 × 1.92 cm (calipers) and appears partially attached to the atrial wall.

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  Fig. 3. Coronal contrast-enhanced CT pulmonary angiography (CTPA) demonstrating a filling defect in the left lower lobar pulmonary artery (red arrow), consistent with pulmonary embolism. The image also shows prominent cervicothoracoabdominal collateral venous circulation (yellow arrow), reflecting chronic superior vena cava obstruction and extensive systemic venous rerouting.

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  Fig. 4. Focused transthoracic echocardiography (apical 4-chamber view) showing a heterogeneous, mobile echogenic mass within the right atrium (RA), protruding toward the tricuspid valve (TV), consistent with Behçet-related intracardiac thrombosis.

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  Fig. 5. Follow-up transthoracic echocardiography (apical 4-chamber view) performed at 3 months showing complete resolution of the previously identified right atrial thrombus, with no residual intracavitary mass.