Very late stent thrombosis (VLST) is a catastrophic and life-threatening complication after percutaneous coronary intervention which presents as an acute coronary syndrome with significantly high mortality and morbidity. VLST is a rare entity with drug-eluting stents and even rarer with bare metal stents. The exact pathophysiologic mechanism of VLST after BMS implantation is not known although various mechanisms have been proposed. Recently, in-stent neoatherosclerosis with intimal plaque rupture has been proposed as a potential mechanism of VLST after BMS. We report a rare case of VLST occurring 17 years after BMS implantation with angiographic and intravascular imaging evidence which provides insight into the mechanisms of VLST.
Though percutaneous transcatheter atrial septal defect closure with newer generation occluder devices is a standard treatment at present, these devices have significant long-term risks (>1 year) associated with such as thrombus formation. Here, we present a case of 28 year-old patient presented with few symptoms and had a history of ASD device closure using amplatzer septal occluder device five years back. The patient was found to have a large thrombus (30×33 mm) attached to the device which was managed using anticoagulants and patients was advised for regular echocardiographic follow-up.
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