Percutaneous coronary intervention for iatrogenic coronary artery pseudoaneurysm at left main trunk bifurcation: A case report.

A 70-year-old man was referred to our hospital with a diagnosis of progressive increase in extravasation leading to an iatrogenic coronary artery (CA) pseudoaneurysm within a month of percutaneous coronary intervention (PCI). The pseudoaneurysm was located on the carina side of the proximal left descending artery (LAD) accompanied by peri-stent contrast staining around the left main trunk (LMT). After a shared decision-making process, a second PCI was performed to prevent CA pseudoaneurysm rupture owing to concerns of adhesion around the LMT and difficulty in approaching the carina side of the proximal LAD for surgery. Coil embolization with four coils was performed and kissing stents with two covered stents were implanted. After the "Double-D molding technique," intravascular ultrasound imaging revealed only small residual spaces out of the stents. Final coronary angiography (CAG) revealed no contrast staining of the pseudoaneurysm. Four months after the PCI, follow-up CAG revealed no further pseudoaneurysm enlargement. To the best of our knowledge, this is the first case of PCI for a CA pseudoaneurysm at the LMT bifurcation treated using kissing stents with two covered stents. Coil embolization and implantation of kissing stents with two covered stents with the "Double-D molding technique" is an optional method to stop further enlargement of the pseudoaneurysm at the left main trunk bifurcation.

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The authors declare no conflicts of interest.