Abstract

We report a case of everolimus-eluting stent restenosis caused by neoatherogenesis. Optical coherence tomography indicated the presence of a superficial arch with high optical intensity in the in-stent mid-segment, followed by significant signal attenuation, with poorly defined borders, indicating the presence of lipid infiltration and/or necrotic core, similar to that observed in de novo coronary lesions. Signs suggesting macrophage/ foam cell infiltration were observed inside the fibrous cap, indicating the presence of local inflammatory activity. The development of new in-stent atherosclerosis at the site of a pre-existing neointimal tissue (neoatherosclerosis) was recently identified as an additional cause of coronary stent failure. The present report is one of the first to demonstrate the finding of neoatherosclerosis as a second generation drugeluting stent failure. Neoaterosclerose Precoce como Causa de Reestenose de Stent Farmacológico de Segunda Geração Relatamos um caso de reestenose de stent eluidor de everolimus causada por neoaterogênese. A tomografia de coerência óptica revelou, no segmento médio intrastent, presença de arco superficial com alta intensidade óptica, seguido por significativa atenuação do sinal luminoso, com limites mal definidos, indicando presença de infiltração lipídica e/ou núcleo necrótico, semelhante ao observado em lesões coronárias de novo. Sinais sugerindo infiltração de macrófagos/foam cells puderam ser observados no interior da capa fibrosa, denotando presença de atividade inflamatória local. O surgimento de nova aterosclerose intrastent, no local de um tecido neointimal já formado (neoaterosclerose), tem sido recentemente identificado como causa adicional de falência de stents coronários. O presente relato é um dos primeiros a demonstrar o achado de neoaterosclerose como falha de um stent farmacológico de segunda geração.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.