Inexplicable Late Type Ia Endoleak Associated With the Low-Profile Ovation Endograft in a Patient With Favorable Neck Anatomy: Influence Statistics

Expert Impact

Concepts for which they have has direct influence: Aortic aneurysm , Aneurysm sac , Computed tomography , Type endoleak , Transcaval approach , Vessel prosthesis , Blood vessel .

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Inexplicable Late Type Ia Endoleak Associated With the Low-Profile Ovation Endograft in a Patient With Favorable Neck Anatomy

Abstract

. PURPOSE: To report an unusual late type Ia endoleak after endovascular aneurysm repair with a low-profile sealing ring endograft and its treatment with transcaval sac embolization. CASE REPORT: An 82-year-old man was treated for a 47-mm abdominal aortic aneurysm associated with a 35-mm left common iliac artery aneurysm using an Ovation Abdominal Stent Graft System. Correct endograft placement was documented at 3-month follow-up. Seven months after the repair, the patient was admitted to the emergency department with acute left inguinal pain. Computed tomography showed aneurysm sac enlargement (57 mm) and a contained rupture of the left common iliac artery due to a late type Ia endoleak. The endoleak was embolized with coils and thrombin via a transcaval approach. Sac shrinkage without signs of endoleak was observed at 12-month follow-up. CONCLUSION: In this case, late endograft failure with sealing ring collapse created an inflow channel into the aneurysm sac, with massive type Ia endoleak.