title: Hypogastric artery aneurysm rupture after endovascular graft exclusion with shrinkage of the aneurysm: significance of endotension from a "virtual," or thrombosed type II endoleak.
abstract: Type II endoleaks, resulting from retrograde branch flow, after endovascular graft aneurysm exclusion are considered benign because they usually thrombose and are commonly associated with stable or shrinking aneurysm sacs. We report a hypogastric artery aneurysm rupture from endotension from an undetected, thrombosed Type II endoleak, associated with sac shrinkage. The patient had undergone an endovascular graft repair of a 4-cm right common iliac artery and 9-cm hypogastric artery aneurysm with distal hypogastric artery coil embolization. Serial computed tomography scans revealed no endoleak and a hypogastric aneurysm thrombosis with shrinkage. Eighteen months later, the aneurysm ruptured as a result of pressurization from backbleeding, patent branches.
authors.affiliation: Division of Vascular Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY 10467, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Bade
authors.forename: T
authors.initials: T
authors.lastname: Ohki
authors.forename: J
authors.initials: J
authors.lastname: Cynamon
authors.forename: F J
authors.initials: FJ
authors.lastname: Veith
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017542:Aneurysm, Ruptured / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery*; D000792:Angiography; D001807:Blood Vessel Prosthesis; D004621:Embolization, Therapeutic / Q000009:adverse effects; D004724:Endoscopy / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D017543:Iliac Aneurysm / Q000175:diagnosis* / Q000601:surgery*; D008297:Male; D012086:Reoperation; D018570:Risk Assessment; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome