case_images: PMC11416930_01
case_images: (A) Electrocardiogram before surgery; (B) chest x-ray before surgery; (C) contrast computed tomography; (D) 3D reconstruction of computed tomography. RA, right atrium; RV, right ventricle; LV, left ventricle; RAAA, right atrial appendage aneurysm.
case_images: fcvm-11-1384972-g001.jpg
case_images: PMC11416930_01_fcvm-11-1384972-g001.jpg
case_images: F1
case_images: No heart murmur was found and the electrocardiogram showed sinus rhythm (Figure 1A). The chest x-ray showed an obvious enlargement of heart shadow (Figure 1B). It measured approximately 95 x 43 mm (Figures 1C,D).
case_images: (A,B) intraoperative view of RAAA and its location; (C) intracardiac view of RAAA; (D) electrocardiogram after surgery. RV, right ventricle; AO, aorta; SCV, superior vena cava; RAAA, right atrial appendage aneurysm.
case_images: fcvm-11-1384972-g002.jpg
case_images: PMC11416930_01_fcvm-11-1384972-g002.jpg
case_images: F2
case_images: During the surgery a 105 x 55 mm noncontractile cystic structure originating from the right atrial appendage was found locating on the right anterior side of the right atrium (Figures 2A,B). Through the incision upon the surface of the aneurysm, the inner structure of the cystic outpouching, coronary sinus and the inflows of the caval veins were checked (Figure 2C). Postoperative electrocardiogram demonstrated sinus rhythm (Figure 2D).