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Definition of Vena obliqua atrii sinistri
1. Noun. A tributary of the coronary sinus; on the posterior wall of the left atrium.
Medical Definition of Vena obliqua atrii sinistri
1. A small vein on the posterior wall of the left atrium which merges with the great cardiac vein to form the coronary sinus; it is developed from the left common cardinal vein, and occasionally persists as a left superior vena cava. Synonym: vena obliqua atrii sinistri, Marshall's oblique vein. (05 Mar 2000)