Endovascular Management of Aorta-Iliac Stenosis and Occlusive Disease by Kissing-Stent Technique

Table 2

TASC II classification of aorta-iliac lesions.

Type	Criteria
A	(i) Unilateral or bilateral stenosis of CIA; (ii) Unilateral or bilateral single short (≤3 cm) stenosis of EIA
B	(i) Short-segment (≤3 cm) stenosis of infrarenal aorta; (ii) Unilateral CIA occlusion; (iii) Single or multiple stenosis (3–10 cm) involving the EIA not extending into the CFA; (iv) Unilateral EIA occlusion not involving the origins of internal iliac or CFA
C	(i) Bilateral CIA occlusions; (ii) Bilateral EIA stenosis (3–10 cm long) not extending into the CFA; (iii) Unilateral EIA stenosis extending into the CFA; (iv) Unilateral EIA occlusion that involves the origins of internal iliac and/or CFA; (v) Heavily calcified unilateral EIA occlusion with or without involvement of origins of internal iliac and/or CFA
D	(i) Infrarenal aorta-iliac occlusion; (ii) Diffuse disease involving the aorta and both iliac arteries requiring treatment; (iii) Diffuse multiple stenosis involving the unilateral CIA, EIA, and CFA; (iv) Unilateral occlusions of both CIA and EIA; (v) Bilateral occlusions of EIA; (vi) Iliac stenosis in patients with AAA requiring treatment and not amenable to endograft placement or other lesions requiring open aortic or iliac surgery

Endovascular treatment is not intended for these lesion types. Lesions involving CFA with severe stenosis are excluded in these types. TASC II, Trans-Atlantic Inter-Society Consensus-II; CIA, common iliac artery; EIA, external iliac artery; CFA, common femoral artery; AAA, abdominal aortic aneurysm.