figure three signJoe Segen2016-11-17T22:06:14+00:00
figure three sign
A descriptive term referring to an indentation of the lateral margin of the aorta accompanied by poststenotic dilation a typical finding in aortic coarctation fancifully likened to number 3.
A “reverse 3” sign can be seen on barium oesophagograms as a result of this anomaly. Other radiographic findings associated with long-standing aortic coarctation are elevation of the left ventricular apex and linear, wavy opacities behind the sternum due to dilated internal mammary arteries.
Synonyms 3 sign, E sign, figure 3 sign, reversed three sign