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Figure 3: Virtual cardiac dissection from a patient with a superior sinus venosus interatrial communication comparable to a heart specimen sectioned in an equivalent view (a) shows that the defect lies beyond the confines of atrial septum. Virtual cardiac dissection in left anterior oblique projection (b) illustrates anomalous connection of the right upper pulmonary vein (red arrow), while the right lower pulmonary vein (yellow arrow) connects normally. (c) The orifice of the superior caval vein overriding the superior rim of the atrial septum (yellow asterisk). LA: Left atrium, LPV: Left pulmonary vein, PA: Pulmonary artery, RA: Right atrium

Figure 3: Virtual cardiac dissection from a patient with a superior sinus venosus interatrial communication comparable to a heart specimen sectioned in an equivalent view (a) shows that the defect lies beyond the confines of atrial septum. Virtual cardiac dissection in left anterior oblique projection (b) illustrates anomalous connection of the right upper pulmonary vein (red arrow), while the right lower pulmonary vein (yellow arrow) connects normally. (c) The orifice of the superior caval vein overriding the superior rim of the atrial septum (yellow asterisk). LA: Left atrium, LPV: Left pulmonary vein, PA: Pulmonary artery, RA: Right atrium