Successful retrieval of an entrapped coronary stent with its delivery system by small balloon dilatation at the entrapped site: A case report

A 73-year-old woman who had undergone percutaneous coronary intervention (PCI) with a drug-eluting stent in the proximal tortuous right coronary artery (RCA) 5 years previously was referred to our hospital because of unstable angina due to in-stent restenosis. During PCI, a drug-eluting stent with its delivery system became entrapped at the proximal edge of the previously placed stent, with its proximal half expanded into the aorta. The entrapped coronary stent was locked in the proximal tortuous RCA. We successfully retrieved the entrapped coronary stent with its delivery system by dilating a low-profile balloon at the entrapped site and dislocating the locking point (102 words).