What is the Coumadin ridge?
Coumadin ridge, also known as a warfarin ridge or left lateral ridge, is a fold of the left atrial wall between the left superior pulmonary vein and the left atrial appendage.
![Coumadin ridge](https://q-radiology.com/wp-content/uploads/2022/11/image-102-1024x1024.png)
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Reference)
RadioGraphics 2019 39:5, 1238-1263