title: Acute symptomatic abdominal aortic aneurysm secondary to endovascular stent graft associated type II endoleak.
abstract: Endovascular abdominal aneurysm repair (EVAR) is popular because of its low invasiveness and feasibility for high-risk patients. Endoleak is common after EVAR and is characterized by blood flow within the aneurysm sac but outside the stent graft. Type II or collateral endoleak commonly results from retrograde filling of the aneurysm from collateral visceral vessels, lumbar, inferior mesenteric, accessory renal or sacral arteries. Collateral leaks are generally thought to be benign and over half of the early leaks will seal spontaneously. Sporadically, collateral endoleak could lead to aneurysm sac pressurization and place the patient at ongoing risk of rupture. Herein, we report an uncommon case of early post-stent graft placement symptomatic abdominal aortic aneurysm associated with type II endoleak.
authors.affiliation: Department of Surgery, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR.
authors.forename: Karen Ka Leung
authors.initials: KK
authors.lastname: Chan
authors.forename: Wing Tai
authors.initials: WT
authors.lastname: Siu
authors.forename: Kai Hung
authors.initials: KH
authors.lastname: Fung
authors.forename: Kwok Kay
authors.initials: KK
authors.lastname: Yau
authors.forename: Simon Kin Hung
authors.initials: SK
authors.lastname: Wong
authors.forename: Michael Ka Wah
authors.initials: MK
authors.lastname: Li
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D001807:Blood Vessel Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D011475:Prosthesis Failure; D015607:Stents / Q000009:adverse effects*