Table 1.

Endoleaks classification

Type I: Incompetent attachment site leaks
IA	Proximal end of endograft
IB	Distal end of endograft
IC	Iliac occluder (plug)
Type II: Branch vessel leaks without attachment site connection
IIA	From only 1 patent branch
IIB	From 2 or more patent branches
Type III: Graft defect
IIIA	Junctional leak or modular disconnect
IIIB	Fabric disruption (midgraft hole)
Type IV Graft wall (fabric) porosity (<30 d after graft placement)
Type V Aneurysm sac enlargement with no detectable endoleak