https://books.google.co.uk/books?id=lsLdCwAAQBAJ&pg=PA33&lpg...


Coumadin ridge = left lateral ridge or ligament of Marshall

http://www.cnch.fr/Media/2013/07/Pisapia-Atelier1.pdf

= ligament de Marshall

ABLATION FIBRILLATION AURICULAIRE ABLATION DES AUTRES FOYERS Le sinus coronaire Le ligament de Marshall Les fibres de Platonov La veine cave supérieure OG et OD


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Note added at 1 day4 hrs (2016-06-08 19:51:39 GMT)
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http://arr.sagepub.com/content/4/1/2047981614562443.full

The left atrial oblique vein is an embryologic remnant of the left superior caval vein. The left superior caval vein is enclosed within the Marshall ligament, which is a fold of the visceral pericardium containing muscle, vascular, and nervous structures (14,15). ****The ligament of Marshall courses obliquely above the left atrial appendage and lies laterally to the left superior pulmonary vein bundle in the epicardial aspect of the left atrial fold, forming the left posterior crest (16). It is also known as the Coumadin or Warfarin ridge, or Q-tip****. This can be mistaken as a pedunculated mass or thrombus (17). Historically, this structure was misinterpreted as a thrombus on echocardiography, resulting in anticoagulation therapy with Warfarin. The Q-tip name derives from an appearance on echocardiography that simulates a Q-tip. This normal structure is well visualized on multiplanar rendering (MPR) imaging (Fig. 8a–c).