What is "oblique vein of the left atrium"

n. a tributary of the coronary sinus; on the posterior wall of the left atrium [syn: vena obliqua atrii sinistri]

The Oblique Vein of the Left Atrium (oblique vein of Marshall) is a small vessel which descends obliquely on the back of the left atrium and ends in the coronary sinus near its left extremity; it is continuous above with the ligament of the left vena cava (lig. venæ cavæ sinistræ vestigial fold of Marshall), and the two structures form the remnant of the left Cuvierian duct.