title: Anomalous drainage of the right superior vena cava into the left atrium.
abstract: A 22 year old man with asymptomatic hypoxemia was found to have a large right to left shunt due to a rare congenital anomaly: total drainage of the right superior vena cava into the left atrium. The anomaly was first suspected after radionuclide angiocardiography was performed using technetium-99m macroaggregated albumin and was confirmed by cardiac catheterization. Contrast echocardiographic and surgical findings are discussed. Other reports on this anomaly are reviewed.
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization; D003326:Coronary Circulation; D004452:Echocardiography; D006325:Heart Atria / Q000002:abnormalities; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D000860:Hypoxia / Q000209:etiology; D008297:Male; D012709:Serum Albumin; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium; D013668:Technetium Tc 99m Aggregated Albumin; D014683:Vena Cava, Superior / Q000002:abnormalities*
chemical_list: D012709:Serum Albumin; D013668:Technetium Tc 99m Aggregated Albumin; D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m