case_images: PMC5791493_01
case_images: Right atrial mass in four chamber echocardiography
case_images: ACA-21-65-g001.jpg
case_images: PMC5791493_01_ACA-21-65-g001.jpg
case_images: F1
case_images: Coronary artery was found to be normal during cardiac angiography [Figure 1].
case_images: Intraoperative view of fibroma
case_images: ACA-21-65-g002.jpg
case_images: PMC5791493_01_ACA-21-65-g002.jpg
case_images: F2
case_images: On inspection of the right atrial cavity, a yellow mass (2.6 cm x 1.6 cm) above the coronary sinus orifice that bulged out to cavity was detected [Figure 2].
case_images: Gross pathology of the resected mass
case_images: ACA-21-65-g003.jpg
case_images: PMC5791493_01_ACA-21-65-g003.jpg
case_images: F3
case_images: It had a yellow color, was fragile, not surrounded by any capsule, and was excavated with its underlying endocardium with a small rim of its peripheral septal tissue and endocardial defect repaired by running proline suture [Figure 3].
case_images: Fibroblast cells in fascicles with abundant collagen fiber (H and E, x100)
case_images: ACA-21-65-g004.jpg
case_images: PMC5791493_01_ACA-21-65-g004.jpg
case_images: F4
case_images: Histopathologic examination showed that the mass was a fibroma [Figure 4] containing fibroblast cells in fascicles with abundant collagen fibers and no evidence of mitotic figures or malignancy.