Undermining and Ballooning the Proximal Part of the Left Main Coronary Artery Stent Resulting in an Iatrogenic Stent Deformation

We present a case of a 52-year-old woman with iatrogenic stent deformation occurred after deployment of the left main (LM) stent due to the unintentional undermining of the proximal part of the LM stent with subsequent balloon dilatation. We tried to crush the deformed part of the LM stent against the left coronary cusp by pushing it with a guiding catheter.