title: A dilated structure in the left atrium.
authors.affiliation: Departments of Anesthesia, Critical Care, and Pain Medicine.
authors.forename: Khurram
authors.initials: K
authors.lastname: Owais
authors.affiliation: Departments of Anesthesia, Critical Care, and Pain Medicine; Departamento de Anestesiología, Hospital México, C.C.S.S., Universidad de Costa Rica, San José, Costa Rica.
authors.forename: Mario
authors.initials: M
authors.lastname: Montealegre-Gallegos
authors.affiliation: Departments of Anesthesia, Critical Care, and Pain Medicine.
authors.forename: Robina
authors.initials: R
authors.lastname: Matyal
authors.affiliation: Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
authors.forename: David C
authors.initials: DC
authors.lastname: Liu
authors.affiliation: Departments of Anesthesia, Critical Care, and Pain Medicine. Electronic address: fmahmood@bidmc.harvard.edu.
authors.forename: Feroze
authors.initials: F
authors.lastname: Mahmood
mesh_terms: D000368:Aged; D054326:Coronary Sinus / Q000000981:diagnostic imaging*; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004108:Dilatation, Pathologic / Q000150:complications / Q000000981:diagnostic imaging; D019560:Echocardiography, Three-Dimensional / Q000379:methods; D017548:Echocardiography, Transesophageal / Q000379:methods; D006325:Heart Atria / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000000981:diagnostic imaging; D009203:Myocardial Infarction / Q000150:complications*; D016491:Peripheral Vascular Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D014683:Vena Cava, Superior / Q000002:abnormalities* / Q000000981:diagnostic imaging*
keywords: coronary sinus; echocardiography; superior vena cava