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. 2023 Mar 25;16(1):69-72.
doi: 10.3400/avd.cr.21-00137.

Isolated External Iliac Artery Aneurysm with Fibromuscular Dysplasia

Yusuke Shintani  1 , Shinichi Hiromatsu  1 , Kyouhei Yamada  2 , Shinya Negoto  1 , Tomoyuki Anegawa  1 , Eiji Nakamura  1 , Hiroyuki Ootsuka  1 , Eiki Tayama  1
Affiliations

Isolated External Iliac Artery Aneurysm with Fibromuscular Dysplasia

Yusuke Shintani et al. Ann Vasc Dis. .

Abstract

Isolated aneurysms of the external iliac artery are rare in patients with fibromuscular dysplasia. In this study, we report the case of a 74-year-old man with advanced gastric cancer who was found to have a medium-sized aneurysm of the external iliac artery (35 mm) on preoperative computed tomography angiograms. The patient underwent laparoscopic gastrectomy followed by replacement of the external iliac artery 6 months later. Histological examination of biopsy specimens revealed fibromuscular dysplasia. The 6 month postoperative course was uneventful. Such a case of external iliac artery aneurysm caused by fibromuscular dysplasia is very rare, and open surgery is recommended for its removal.

Keywords: aneurysm; fibromuscular dysplasia; iliac artery.

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Conflict of interest statement

Disclosure StatementThe authors declare no conflicts of interest.

Figures

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Fig. 1 Reconstructed computed tomography angiograms of the abdomen and pelvis before surgery. (A, B) Angiogram showing a large aneurysm of the left external iliac artery (EIA). (C) Angiogram (axial view) showing the aneurysm of the left EIA distal to the bifurcation of the common iliac artery.
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Fig. 2 Reconstructed three-dimensional computed tomography angiogram showing successful repair of the left external iliac artery aneurysm.
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Fig. 3 Histopathological findings of the aneurysmal wall specimens. (A) Elastica van Gieson stain (×40) and (B) Masson’s trichrome stain (×40) showing thickened fibromuscular tissue (black arrows) and tears of the external and internal elastic membranes of the aorta (white arrows) as a result of fibromuscular hyperplasia.
See this image and copyright information in PMC

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