Aorta

Question 1

Aneurysms located in the descending thoracic and thora- coabdominal segments of the aorta - classification

Answer 1

Crawford classification system

Question 2

Crawford classification system

Answer 2

(a) Type I—involves the majority of the descending thoracic aorta and the suprarenal part of the abdominal aorta.
(b) Type II—involves the entire descending thoracic aorta and the entire abdominal aorta down to the aor- toiliac bifurcation.
(c) Type III—involves the lower (distal) part of the descending thoracic aorta and the entire abdominal aorta down to the aortoiliac bifurcation.
(d) Type IV—involves the abdominal aorta below the diaphragm and down to the aortoiliac bifurcation.
(e) Type V (Safi modification [16])—involves the lower (distal) part of the descending thoracic aorta and the suprarenal part of the abdominal aorta.

Question 3

Acute aortic syndrome

Answer 3

1. Dissection
   2 intramural hematoma
   3 penetrating ulcer

Question 4

Penetrating aortic ulcer

Answer 4

Medial tear + heamatoma
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