Fig. 3From: Giant right atrium, what does it hide? Case presentationPostsurgical echocardiography. A shows an apical-4-chamber plane with convex interatrial septum. B, C show a subcostal 4-chamber plane. The arrow points the bidirectional shunt in foramen oval. RA: Right atrium; LA: Left atrium: LV: Left ventricleBack to article page