Urgent and elective endovascular repair of aPAUs can be achieved with high technical success. The significant co-morbid status of the treated patients is illustrated in the considerable in-hospital mortality and underlines the advantage of such treatment over open surgical repair.

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as coil embolization and stent placement for type V aneurysms, which was performed in two of their patients. We would like to elaborate on the coil embolization of dissecting aneurysms.There are many articles reporting the endovascular treatment of SIDSMA in recent years; many patients with dissecting aneurysms were treated by placement of self-expandable and open stents without coil embolization, and all of them were discharged uneventfully. [2][3][4] We believe that the dissecting aneurysm would thrombose and that the aneurysm size would be reduced after placement of a stent, with gradual resolution of the false lumen and improved remodeling with patency of the true lumen. There likely exists a risk of rupture of the dissecting aneurysm with placement of coils, and the true lumen may also be compressed if coils are used. Although the authors have a good result after coil embolization of the dissecting aneurysm in two patients, we think it may not be necessary to perform such embolization.

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