Rationale: Choice of the appropriate size of stents in the treatment of coronary artery stenosis can often be challenging. Marked tapering of vessels' diameter in their proximal-distal development may lead to sub-optimal results. Distal under-expansion of the drug-eluting stent (DES) or vessel perforation may occur if a larger DES, best suited for the proximal diameter, is chosen. Proximal DES under-sizing with struts malapposition may happen if a smaller DES, fitting the distal diameter, is implanted. Moreover, ectasic vessels present irregular and varying diameter, which may lead as well to segmental malapposition or under-expansion of DES. Self-apposing stents can overcome these limitations thanks to their ability to self-expand also after their release in the vessel and to adapt to a wide range of vessel diameters. Multiple generation of self-apposing, drug-eluting stents have been developed, with progressive amendments pertaining the stent-deployment technique (from deployment by covering-sheath retraction to balloon-delivery) and the drug released (from paclitaxel to sirolimus). The last generation of the self-apposing stents is represented by the sirolimus-eluting, balloon-delivered Xposition S stents. Studies assessing performance of this stent are however limited in sample size and length of follow up, and are mainly controlled trials. Few data are available regarding the clinical outcomes of the self-apposing Stentys stents in a "real-life" setting.