Chinese Journal Of Clinical Anatomy ›› 2012, Vol. 30 ›› Issue (1): 17-21.

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Applied anatomy of the type II endoleak relevant arteries after endovascular aneurysm repair

GUO Fa-cai1, DAI Yuan-bin2, XU Qiang2   

  1. 1. Department of Vascular Surgery, The Second Hospital of Lanzhou University, Lanzhou 730030, China;
    2. Department of Vascular Surgery,The  First  Affiliated  Hospital,  Chongqing Medical University,  Chongqing  400016, China
  • Received:2011-03-02 Online:2012-01-25 Published:2012-02-03

Abstract:

Objective To provide anatomic basis for transarterial embolization or transcaval embolization type II endoleak after endovascular aneurysm repair (EVAR). Methods  The outer diameters of the beginning end, position, tendency, distance to abdominal aorta furcation and relevant included angle of the following arteries of 30 adults corpses (18 male, 12 female) were observed and analyzed statistically: the superior mesenteric artery(SMA)and inferior mesenteric artery(IMA), lumbar artery(LA), median sacral artery, internal iliac artery, iliolumbar artery and accessory renal artery possibly appearing, and the clinical significance was initially discussed.  Results Both SMA and IMA originated from the anterior aortic wall with fixed location and less variation. Their included angels with abdominal aorta were respectively 50° and 23°. For all the specimens, the marginal arteries were observed without variation and absence, however, arc of Riolan was not found. Accessory renal arteries were observed in 2 bodies (frequency: 6.7%) with big differences in the beginning and originating height. The number and location of the lumbar artery and median sacral artery were relatively fixed. The lumber artery had the same tendency with the inferior part of its vertebral body and anastomosed with the iliolumbar artery. The included angel of the internal and external iliac artery was small(26°)or even 0°with almost parallel descent. Conclusions Understood the anatomy characteristics of patent sac contraflow artery due to transarterial embolization type II endoleak, were the precondition of transarterial embolization treatment. In order to get better therapeutic efficacy, different embolization channels and methods are suggested to be chosen on the basis of the distribution and anastomosis variation of patent sac contraflow artery of type II endoleak.

Key words: Type II endoleak, Inferior mesenteric artery, Superior mesenteric artery, Lumbar artery, Transarterial embolization, Arc of Riolan, Applied anatomy

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