case_images: PMC10991678_01
case_images: Depicts the right atrium in transthoracic echocardiography with the annotation that RA represents the right atrium. In (A) an echogenic mass is visualized within the right atrium (indicated by arrows), while color Doppler flow imaging reveals no blood flow signal within the mass. (B) Demonstrates that contrast-enhanced cardiac imaging does not exhibit significant enhancement of the aforementioned mass.
case_images: fped-12-1353883-g001.jpg
case_images: PMC10991678_01_fped-12-1353883-g001.jpg
case_images: F1
case_images: TTE revealed an irregularly shaped mass with low echogenicity measuring approximately 43 mm x 26 mm and attached to the right atrial wall. The mass had a broad base measuring about 35 mm and was adjacent to the tricuspid annulus (Figure 1A). Based on ultrasound findings, it is speculated that there is a thrombus in the right atrial appendage (Figure 1B).
case_images: A well-defined, mass-like soft tissue density lesion measuring approximately 30 mm x 34 mm x 32 mm (anteroposterior diameter x transverse diameter x cranio-caudal diameter) is observed at the right atrial appendage and tricuspid valve chordae tendineae. No discernible enhancement is noted on contrast-enhanced imaging.
case_images: fped-12-1353883-g002.jpg
case_images: PMC10991678_01_fped-12-1353883-g002.jpg
case_images: F2
case_images: The density of the shadow was around 30 Hounsfield units, and no significant enhancement was observed after contrast agent injection, raising suspicion for thrombus formation (Figure 2).