Coronary perforation during insertion of a long stent in a severely calcified lesion

Abstract We reported a case that the insertion of a 48‐mm‐long stent in a calcified coronary lesion after rotational atherectomy led to stent stacking and S‐shaped flection, resulting in longitudinal coronary perforation without stent inflation. Its flexibility and length pose a possible risk of deformation inside the vessel during stent insertion.