Classification of abdominal and thoraco-abdominal aneurysms
Abdominal aortic aneurysms:
- infrarenal - below the renal arteries
- juxtarenal - abutting the renal arteries
Thorac-abdominal aneurysms can be classified according to the anatomic extent of the aneurysm (Crawford's classification):
- type I - involving most of the descending aorta, from the origin of the left subclavian to the suprarenal abdominal aorta
- type II - is the most extensive, extending from the subclavian to the aortoiliac bifurcation.
- type III- involves the distal thoracic aorta to the aortoiliac bifurcation.
- type IV - limited to the abdominal aorta below the diaphragm.
Reference:
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