MRI-Induced Stent Dislodgment Soon After Left Main Coronary Artery Stenting

Several studies have shown the safety of MRI after coronary stenting; however, few of them included patients soon after stenting. In this report, we describe a case of MRI-induced stent dislodgment from left main coronary artery (LMCA) 2 weeks after stenting.A 56-year-old woman underwent coronary angiography for recurrence of angina 12 months after coronary artery bypass graft surgery. Coronary artery bypass graft surgery had been performed with left internal mammary artery grafted to left anterior descending artery and a saphenous vein graft to obtuse marginal branch for LMCA stenosis (Figure 1). The comorbidities of patient included hypertension, dyslipidemia, diabetes mellitus, and prior neurosurgery for a pituitary adenoma. The repeat angiogram showed known stenosis in LMCA, nonobstructive disease of left anterior descending artery and right coronary artery, patent saphenous vein graft to obtuse marginal branch, and an occluded left internal mammary artery (Figure 2). After discussion, stenting of the LMCA with a 3.5×8 mm drug-eluting stent (Cypher; Cordis Corp, Markham, Ontario) was deployed after predilatation under intravascular ultrasound guidance (Figure 3).Figure 1. Baseline coronary angiography. Baseline coronary angiography showing a significant and eccentric left main coronary artery (LMCA) stenosis ( A ) that …