J Korean Med Sci.  2017 Jul;32(7):1056-1061. 10.3346/jkms.2017.32.7.1056.

Clinical Implication of Optical Coherence Tomography-Based Neoatherosclerosis

• Hong SJ
• Lee SY
• Hong MK

• KMID: 2379597
• DOI: http://doi.org/10.3346/jkms.2017.32.7.1056

Abstract

Recent research has indicated neoatherosclerosis (NA), the de novo development of atherosclerosis within the neointimal region of the stented segment after coronary stent implantation, as a mechanism of late/very late stent thrombosis (VLST) and restenosis. This research is based on histologic and intravascular imaging studies. Optical coherence tomography (OCT) is an imaging tool that is superior with regard to resolution capacity, and can be used to visualize detailed information about distinct morphological characteristics of the restenotic tissue. Thus, OCT is a valuable imaging tool for examining NA, such as macrophage infiltration, lipid accumulation, in-stent calcification, or neointimal rupture. This article discusses the prevalence, predictors, and clinical implications of NA that can be observed by OCT.

Keyword

Atherosclerosis; Drug-Eluting Stent; Optical Coherence Tomography

MeSH Terms

Atherosclerosis
Drug-Eluting Stents
Macrophages
Prevalence
Rupture
Stents
Thrombosis
Tomography, Optical Coherence

Figure

• 

  Fig. 1 OCT images of neointima. (A) Lipidic change. (B) Calcific change. Arrows indicate lipid and calcification within neointima, respectively. OCT = optical coherence tomography.

• 

  Fig. 2 OCT images of neoatherosclerotic neointima in patients with ISR (A) and stent thrombosis (B). (A) Lumen is narrow for NA in a patient with ISR. (B) Disrupted neointima (arrows) with thrombi (arrowheads) is observed in a patient with stent thrombosis. ISR = in-stent restenosis, NA = neoatherosclerosis.

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