If we had a case with angiographic peri-stent contrast staining(PSS)s after the first-generation sirolimus-eluting stent, we need a further observation using coronary imaging modalities to evaluate the risk of very late stent thrombosis due to PSSs and to continue or to resume the dual antiplatelet therapy if necessary.
Keywords: Drug‐eluting stent; incomplete stent apposition; multiple interstrut hollow; peri‐strut staining.