Crawford et al developed a classification scheme for thoracoabdominal aortic aneurysms. The authors are from Baylor College of Medicine in Houston.
NOTE: The patient population included those with and without dissection.
|
Involvement of Thoracic Aorta
|
Involvement of Abdominal Aorta
|
Group
|
|
most of the descending thoracic aorta
|
upper abdominal aorta (above renal arteries)
|
I
|
|
most of the descending thoracic aorta
|
most or all of the abdominal aorta
|
II
|
|
distal descending thoracic aorta
|
variable
|
III
|
|
none
|
most or all of the abdominal aorta
|
IV
|
