Editor-in-Chief Ufuk Demirkılıç Frequency Quarterly Abbreviation Turk J Vasc Surg Publisher Turkish National Vascular and Endovascular Surgery Society E-ISSN 2667-5080

Turkish Journal of Vascular Surgery 2022 , Vol 31 , Issue 2
The relationship of inferior mesenteric artery occlusion with abdominal aortic aneurysm diameter and intramural thrombus thickness
Evren Müge Taşdemir Mete1, Uğur Kısa1, Murat Baştopçu1
1Department of Cardiovascular Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Türkiye DOI : 10.9739/tjvs.2022.1196 Objectives: In this study, we aimed to investigate the relationship between the diameter of the abdominal aorta with inferior mesenteric artery (IMA) occlusion and intraluminal thrombus (ILT) thickness, as well as the relationship between IMA occlusion and ILT diameter in patients with an abdominal aortic aneurysm (AAA).

Patients and methods: This retrospective study was conducted with 599 AAA patients (515 males, 84 females; mean age: 70.4±9.7 years; range, 26 to 96 years) between January 2015 and December 2020. The patients were grouped according to IMA occlusion. There were 169 (28.2%) patients with an occluded IMA (Group A) and 430 (71.8%) patients with a patent IMA (Group B).

Results: No correlation was found between aneurysm diameter and IMA occlusion. Intraluminal thrombus was more frequent in patients with IMA occlusion than in those without an occlusion (p=0.002). The ILT diameter was found to be extended in Group A (p<0.001). There was a significant positive correlation between AAA diameter and ILT diameter (tb=0.389; p<0.001).

Conclusion: Inferior mesenteric artery occlusion was not related to AAA diameter but was more frequently detected with increased ILT thickness/AAA diameter ratio. The increase in the aneurysm diameter is not associated with IMA occlusion. Future studies on ILT progression can better reveal the role of ILT on the pathogenesis of IMA occlusion. Keywords : Abdominal aortic aneurysm, computed tomography angiography, inferior mesenteric artery

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