Endovascular repair with chimney technique of abdominal aortic aneurysm with hostile aortic neck
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Updated: May 12, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Jang Yong Kim1, Jae Young Park2, Soon Gu Cho3
1Division of Vascular and Endovascular Surgery, Department of Surgery, School of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.
Abstract:
Abdominal aortic aneurysm (AAA) with hostile aortic neck is not a good candidate for conventional endovascular aneurysm repair (EVAR), and a recent paper showed that EVAR with chimney technique (Ch-EVAR) yielded reasonable outcome. We report here a case of successful Ch-EVAR treatment of AAA with hostile neck. An 81-year-old man presented with a 71-mm AAA during evaluation of a gastric ulcer. Aortic neck was 30 mm in diameter, 10-15 mm in length and angulated by 100°. EVAR was performed with chimney stenting to both renal arteries, and the patient recovered after transient hematuria. At one-year follow-up, AAA had increased by 7 mm with delayed type I endoleak control without renal insufficiency. The patient needed close follow-up.

