| 单词 |
reversed-three sign |
| 释义 |
reversed-three sign re·versed-·three signon an esophagram of a patient with coarctation of the aorta, the shape of the contrast-filled esophagus caused by the aortic arch (upper convexity) and poststenotic dilatation (lower convexity); the cusp of the backwards 3 is at the level of the coarctation itself. |
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