case_images: PMC5724924_01
case_images: A highly mobile structure was shown in the right atrium (arrow) on echocardiography.
case_images: NCI-4-270-g001.jpg
case_images: PMC5724924_01_NCI-4-270-g001.jpg
case_images: F1
case_images: A highly mobile structure attached in the proximity of the inferior vena cava and patent foramen ovale were observed on echocardiography (Fig. 1).
case_images: Intraoperative photograph showing a net-like structure, the Chiari network, attached to the opening of the inferior vena cava and coronary sinus (arrow).
case_images: NCI-4-270-g002.jpg
case_images: PMC5724924_01_NCI-4-270-g002.jpg
case_images: F2
case_images: Thereafter, the right atrium was opened, and a net-like structure localized at the opening of the inferior vena cava and coronary sinus Chiari network was observed (Fig. 2).