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. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: J Cardiovasc Dis Diagn. 2016 Aug 20;4(5):255. doi: 10.4172/2329-9517.1000255

Table 1.

Overview of type II endoleaks.

Endoleak Description
Type Ia Blood flow in the aneurysm sac due to incomplete seal proximally
Type Ib Blood flow in the aneurysm sac due to incomplete seal distally
Type IIa Filling of the aneurysm sac due to retrograde branch flow from a single collateral vessel
Type IIb Filling of the aneurysm sac due to retrograde branch flow from two or more collateral vessels
Type III Blood flow in the aneurysm sac due to inadequate sealing of overlapping stent grafts
Type IV Blood flow in the aneurysm sac due to porosity of the graft fabric
Type V Aneurysm sac expansion with no clear endoleak