Document Assessment
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Figure 5. SVS/STS Classification System
Society for Vascular Surgery/Society
of oracic Surgeons (SVS/STS)
Aortic Dissection Classification
System of dissection subtype according
to zone location of primary entry tear.
Figure 6
An aortic dissection with an entry
tear in zone 0 is classified as type
A. In the example illustrated, the
dissection process extends distally
to zone 9, such that the dissection is
fully classified as A9.
A9
