A Case of In-Stent Neoatherosclerosis 10 Years after Carotid Artery Stent Implantation: Observation with Optical Coherence Tomography and Plaque Histological Findings |
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Authors: | Hiroyuki MATSUMOTO Rie YAKO Osamu MASUO Katsuhisa HIRAYAMA Yuji UEMATSU Naoyuki NAKAO |
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Institution: | 1.Department of Neurological Surgery, Wakayama Medical University, Wakayama, Wakayama |
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Abstract: | We report a patient''s case of slow progressive in-stent restenosis 10 years after bare-metal stent implantation to his carotid artery. We treated the patient with an additional stent placement under a distal filter protection device. Optical coherence tomographic assessment and plaque histology during the carotid artery stenting (CAS) revealed atheromatous change at in-stent neointima, which contained lipid-rich plaque and calcification deposits. These findings suggest that in-stent neoatherosclerosis may play an important role in the pathogenesis of very late stent restenosis after CAS. |
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Keywords: | in-stent restenosis atherosclerosis carotid artery stenting optical coherence tomography |
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