Table 4

Types, mechanism and management of various endoleaks

Endoleak subtypeMechanismManagement
Type IAttachment site endoleak
Ia—Proximal attachment site
Ib—Distal attachment site
Stent graft resizing/open repair
Type IIRetrograde flow through a collateral feeder vessel (commonly inferior mesenteric or lumbar artery)Follow-up imaging and intervention only if increasing size/symptomatic
Type IIIFabric tears, graft wall defect or modular disconnectionImmediate repair
Type IVDue to graft wall porosityBenign, intervene only if aneurysm expansion
Type VEndotensionBenign, intervene only if aneurysm expansion