Crawford Coselli classification of Thoracoabdominal Aortic Aneurysm
Type I: Only suprarenal portion of aorta is involved
Type II: Entire thoraco-abdominal descending aorta is involved, up to the bifurcation
Type III: Distal half of descending thoracic aorta and abdominal aorta up to the bifurcation is involved.
Type IV: Entire infra-diaphragmatic (abdominal) portion of descending aorta is involved
Reference
- Crawford ES, Coselli JS. Thoracoabdominal aneurysm surgery. Semin Thorac Cardiovasc Surg. 1991 Oct;3(4):300-22. PMID: 1793767.