Thrombosed aneurysm vs Chronic aortic dissection

Thrombosed aneurysm vs Chronic dissection

	Thrombosed aneurysm	Chronic aortic dissection
1	Wall calcification displaced outwards	Wall calcification displaced internally
2	Large aortic lumen	Normal / Small aortic lumen
3	Shorter segment involvement	Longer segment involvement (usually >6cm)
4	Aortic size is large	Aortic size is usually Normal in acute stage, can be large in chronic stage
5	Tend to involve lumbar branches	Tend to involve renal artery and SMA

*SMA: Superior mesenteric artery