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Endovascular management of symptomatic stenosis of supra-aortic arteries in patients with Takayasu arteritis.

BACKGROUND
Endovascular management is used to treat Takayasu arteritis (TA) involving the supra-aortic branches. However, the long-term outcome of this treatment remains unclear. Here, technical safety, outcomes, and restenosis management of supra-aortic arteries in TA patients receiving endovascular treatment were evaluated.


METHODS
TA patients with symptomatic supra-aortic stenosis who underwent percutaneous angioplasty and stenting (PTAS) between 2008 and 2018 at our institute were enrolled in this study. Pre- and post-procedural magnetic resonance imaging (MRI) evaluations, including high-resolution vessel wall imaging (HR-VWI), were performed. Technical efficacy, peri-procedural complications, early post-procedural MRI results, and stent patency were examined.


RESULTS
All six patients successfully received stent placement or percutaneous transluminal angioplasty in a total of 22 treated arteries without neurological complications. During follow-up (mean, 56.3 ± 41.1 months), no recurrent stroke occurred, yet significant restenosis developed in 12/22 (54.5%) of the treated arteries. Three of the patients underwent HR-VWI prior to surgery. Concentric wall thickening and enhancement of the left common carotid artery was detected in one patient, indicating acute inflammation. Angioplasty with drug-eluting balloon (DEB) successfully treated a case of refractory restenosis. Among ten early post-procedure MRI performed, only two asymptomatic new lesions were detected with diffusion-weighted imaging.


CONCLUSION
Endovascular treatment of supra-aortic arteries of TA patients was safe and effective, yet was associated with a high restenosis rate. Thus, close follow-up is needed. HR-VWI is helpful for pre-procedural selection of patients for PTAS and DEB angioplasty appears to be a promising treatment for refractory in-stent restenosis.