Aortic dissection - III

The image on the left shows an acute aortic dissection. The media of the aorta shows a dissection plane filled with blood which is extravasating into the adventitia.
The image on the right shows a chronic dissection plane. Note that the dissection plane is filled with connective tissue instead of blood. This connective tissue represents the formation of "neointima" in the false lumen of the dissection. The curled appearance of the intimal tear is due to retraction by the organized neointima.


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