The structural atrophy of the aneurysm wall in secondary expanding aortic aneurysms with endoleak type II

Journal of Vascular Surgery
Anna-Leonie MengesAlexander Zimmermann

Abstract

Abdominal aortic aneurysm (AAA) has an age-dependent prevalence of 2% to 11% and is a leading cause of death in men aged >65 years if not treated surgically. Today, endovascular aneurysm repair (EVAR) is performed in up to 80% of elective cases and 60% of ruptured cases. Although EVAR improves perioperative, early, and midterm outcomes, it is associated with specific complications, especially endoleaks (ELs). Type II EL occurs in up to 30% of procedures; however, aneurysm sac expansion and rupture are rare, and currently nothing is known about the morphologic changes in this condition. In this study, we investigate the aneurysm wall morphology in secondary expanding human AAA samples after EVAR with persistent type II EL in comparison to nonaneurysmatic control aortic and AAA samples. Samples were acquired from the aneurysm sac during retroperitoneal feeder vessel ligation in a cohort of 10 patients with secondary expansion after EVAR and type II EL diagnosed by computed tomography and contrast-enhanced ultrasound. Control tissues included 42 AAAs and 13 control aortae published previously. Hematoxylin and eosin staining and immunohistochemistry for CD3/4/31/68 and Ki67 were performed for morphologic analysis. Terminal deoxynuc...Continue Reading

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Citations

Mar 19, 2020·Journal of Internal Medicine·R L DalmanB Modarai
Jul 20, 2021·Vascular Medicine·Jiang-Ping Gao, Wei Guo
Sep 24, 2019·Journal of Vascular Surgery·John A Curci

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