Abstract
Visceral arterial aneurysms (VAAs) are rare with a prevalence of 0.1%-2%. VAAs carry a definite risk of rupture, which varies infrequency between 3% and 10%, depending on the aneurysm size and location; when these aneurysms rupture, they are fatal in 20% to 100% of patients. Recently, transcatheter arterial embolization including coil packing or isolation for VAAs has been widely used as a treatment alternative to surgical ligation. However, the VAAs sometimes have a large neck, and often involve a few branches at the neck or trunk. Therefore, the adjunctive techniques including multiple catheter technique, or balloon- or stent- assist technique should be required for safe and sufficiently tight packing of the aneurysmal lumen while preserving the parent artery and branches. Stent graft is an alternative technique of excluding VAAs while preserving the parent artery. So, a wide-neck aneurysm is no longer a contraindication for endovascular treatment when a combination of adjunctive techniques in used. In this article, we present a pictorial review of various kinds of adjunctive technique especially focusing on the stent assisted coil packing of VAAs.
