I believe Stanford A should be reworded/clarified to “originating in the ascending aorta”, but for example in Debakey II (Stanford A); the dissection can propogate down the descending aorta as well. Vs. Stanford B which has only the descending aorta @braviboron
I meant to say type I in my reply below sorry
@Stapedius have cited StatPearls and copied their definition, but would be happy to change to your wording but we should find a matching source? I feel like I have seen both wordings, certainly not tied to current wording