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Endoleak · Vascular
Sistemas/Vascular

Endoleak Endoleak classification after EVAR

vigente

Classifies persistent aneurysm-sac perfusion after endovascular aneurysm repair by source.

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Escala de categorias
IIIIIIIVV

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Procedência e vigência

Órgão emissor
Vascular surgery consensus
Versão
current
Ano
2023
Família
léxico
Tipo de lógica
flat
Modalidade
CT, US, Angiography
Fonte primária
The Challenge of Endoleaks in Endovascular Aneurysm Repair (EVAR): A Review of Their Types and Management · doi:10.7759/cureus.39775
Última verificação
2026-06-22
Última checagem
2026-06-22

Lógica de decisão

Forma estruturada (flat). Uma futura calculadora a lê; as categorias abaixo são a superfície legível.

Mostrar a lógica estruturada (JSON)
{
  "categories": [
    "I",
    "II",
    "III",
    "IV",
    "V"
  ]
}

Categorias num relance

Cat.SignificadoCondutaRiscoFonte
I
Type I, attachment-site leak
Inadequate seal at a graft attachment site lets blood track alongside the graft into the aneurysm sac. Subtype Ia is a proximal attachment-site leak; subtype Ib is a distal attachment-site leak.		Generally prompt intervention. Type Ia: balloon molding, a proximal cuff or stent, chimney or fenestrated EVAR, anchors, or embolization. Type Ib: distal graft extension. Open conversion if endovascular repair fails.High rupture risk from continued sac pressurization and expansion.
okfonte
PMC10312356 (Yanamaladoddi et al., Cureus 2023), 'Type I Endoleaks'; corroborated by StatPearls NBK554573 'Abdominal Aortic Repair', Complications.
II
Type II, branch-vessel backflow
Retrograde (collateral) backflow into the aneurysm sac from aortic side branches, chiefly the lumbar arteries and the inferior mesenteric artery; the most common type overall.		Often observed; treated when the sac enlarges (about 5 mm or more over roughly 6 months) by transarterial, translumbar/direct-sac, or transcaval embolization, or surgical feeder ligation as an alternative.Relatively benign; many resolve within about 6 months, but roughly 55% show sac enlargement within 3 years if persistent beyond 6 months.
okfonte
PMC10312356, 'Type II Endoleaks'; corroborated by StatPearls NBK554573, Complications.
III
Type III, graft defect or component separation
Mechanical graft failure perfusing the sac. Subtype IIIa is separation or disconnection between graft components (junctional); subtype IIIb is a fabric defect, tear, or hole.		Prompt intervention: endovascular relining with additional graft component(s) bridging or overlining the defect; open conversion if needed.High rupture risk, comparable to type I.
okfonte
PMC10312356, 'Type III Endoleaks'; corroborated by StatPearls NBK554573, Complications.
IV
Type IV, graft porosity
Blood seeps through the inherent porosity of the graft fabric, with no discrete defect; usually seen early after implantation.		Usually transient and self-limiting; observation, rarely requiring intervention with modern devices.—
okfonte
PMC10312356, 'Type IV Endoleaks'; corroborated by StatPearls NBK554573, Complications.
V
Type V, endotension
Continued aneurysm-sac enlargement after EVAR with no demonstrable endoleak; a diagnosis of exclusion, also called endotension.		Surveillance, with intervention if sac growth continues (e.g. graft relining or open conversion).—
okfonte
PMC10312356, 'Type V Endoleaks'; corroborated by StatPearls NBK554573, Complications.

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