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    Use of Chimney Technique in the Treatment of Short-Necked Juxtarenal Aortic Aneurysms with Graft Stent: A Retrospective Study
    (Mardin Artuklu University, 2023) İsmailoğlu, Eren; Eker, Secil; Bozkaya, Halil; Oğuz, Emrah; Cinar, Celal; Parıldar, Mustafa; Posacıoğlu, Hakan
    Introduction: Chimney technique is also cheaper than the other alternative treatment methods. Additionally, this technique has more advantages compared to fenestrated stent and hybrid procedure. Objective: The aim of the current study was to evaluate the results of chimney technique with endovascular treatment in short neck juxtarenal aortic aneurysms. Methods: The study included 17 patients with juxtarenal abdominal aorta aneurysm, treated with endovascular stent greft by using chimney technique at interventional radiology department between January 2008 and April 2013. Patients underwent preoperative and postoperative digital subtraction angiography (DSA) and computed tomography angiography (CTA), and the images were recorded in digital radiology archive. Preoperative and postoperative DSA and CTA images of patients were retrospectively evaluated. The results of the chimney technique were discussed. Findings: The mean age of 17 patients (all men) was 68.94±9.46 years. Among the aneurysm etiologies, there were 14 patients with atherosclerosis and 3 patients with vasculitis. Four patients had preoperative aneurysm rupture. The average length of the aneurysm neck of patients was 3.02±2.8 mm (0-9 mm), and the average follow-up period after the operation was 6.86±4.60 (1-16 months). Technical failure occurred in 2 of 17 patients (Success rate; 92.86%). Chimney stent was placed in bilateral renal artery of 9 patients, in left renal artery of 3 patients, in right renal artery of 2 patients, and in SMA of 1 patient of 15 patients. Endoleak was demonstrated in 3 patients, while thrombosis was demonstrated in 3 patients on CTA. There was significant difference in mean aneurysm diameters in preoperative, postoperative 6. and 12. months (p<0.05). Conclusion: Chimney technique is a successful method in patients with juxtarenal aorta aneurysm treated with endovascular treatment.