Abstract

A Coumadin ridge, also called warfarin ridge is a normal anatomic variant that is occasionally found in the left atrium. It is a band-like embryological remnant in the left atrium formed by the coalition of the left superior pulmonary vein and left atrial appendage, which results in a lateral fold of left atrial wall tissue. The ligament of Marshall, autonomic nerve bundle, and small atrial or sinoatrial node artery are all located in this ridge. It can appear as a linear or nodular mass which can undulate with cardiac motion and can quickly be mistaken for a tumor or thrombus if it is particularly apparent. Misdiagnosis, as well as unnecessary workup and treatment, can be reduced by carefully evaluating and considering the common variants addressed in this report

Description