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. Author manuscript; available in PMC: 2021 Aug 16.
Published in final edited form as: J Vasc Surg. 2019 May 28;69(6 Suppl):3S–125S.e40. doi: 10.1016/j.jvs.2019.02.016

Table 5.2.

Aorto-iliac (inflow) disease staging in GLASS

I Stenosis of the common and/or external iliac artery, chronic total occlusion of either common or external iliac artery (not both), stenosis of the infrarenal aorta; any combination of these
II Chronic total occlusion of the aorta; chronic total occlusion of common and external iliac arteries; severe diffuse disease and/or small-caliber (<6 mm) common and external iliac arteries; concomitant aneurysm disease; severe diffuse in-stent restenosis in the AI system
A, no significant CFA disease; B, significant CFA disease (>50% stenosis)

AI, Aortoiliac; CFA, common femoral artery.

A simplified staging system for inflow (AI and CFA) disease is suggested. Hemodynamically significant disease (>50% stenosis) of the CFA is considered a key modifier (A/B).