title: [Preoperative diagnosis of unroofed coronary sinus: a case report].
abstract: A 54-year-old man was admitted to our hospital because of exertional dyspnea. A second heart sound with fixed splitting and a systolic ejection murmur along the left sternal border was audible. The chest roentgenogram showed increased pulmonary vascularity, and the electrocardiogram showed incomplete right bundle branch block. Two-dimensional echocardiography in the parasternal view demonstrated a partition defect between the left atrium and the coronary sinus. Furthermore, transesophageal echocardiography revealed a left-to-right shunt flow into the coronary sinus through the defect. At these points, the patient was diagnosed as having a partially unroofed mid-portion of the coronary sinus. Unroofed coronary sinus is a cardiac anomaly rarely diagnosed prior to surgical operation. Two-dimensional echocardiography, especially transesophageal echocardiography, is useful for the preoperative diagnosis of unroofed coronary sinus.
authors.affiliation: First Department of Internal Medicine, School of Medicine, University of Tokushima.
authors.forename: M
authors.initials: M
authors.lastname: Akaike
authors.forename: T
authors.initials: T
authors.lastname: Nishiuchi
authors.forename: A
authors.initials: A
authors.lastname: Ohara
authors.forename: Y
authors.initials: Y
authors.lastname: Okauchi
authors.forename: H
authors.initials: H
authors.lastname: Kawai
authors.forename: S
authors.initials: S
authors.lastname: Saito
mesh_terms: D003330:Coronary Vessel Anomalies / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D017548:Echocardiography, Transesophageal; D006801:Humans; D008297:Male; D008875:Middle Aged