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11 August 2018 : Case report  Japan

Difficult Wiring of a Recanalized Thrombotic Lesion in the Right Coronary Artery Analyzed with Optical Coherence Tomography

Challenging differential diagnosis, Rare disease

Takeshi Niizeki1ABCDEFG*, Eiichiro Ikeno1CDF, Tadateru Iwayama1DEF, Masafumi Watanabe2ADEF

DOI: 10.12659/AJCR.910166

Am J Case Rep 2018; 19:941-945

Abstract

BACKGROUND: Recanalized thrombi are usually unrecognized in conventional coronary angiography. However, multiple channels have been observed in recanalized thrombotic lesions. Therefore, the wire apparently crosses the lesion in some difficult cases. We analyzed the cause of difficult wiring of a recanalized thrombotic lesion using optical coherence tomography (OCT).

CASE REPORT: An 87-year-old man with chest pain was admitted to our hospital. Coronary angiography showed significant stenosis of the proximal right coronary artery with irregular linear filling and haziness. Crossing of the wire for the lesion was very difficult but was achieved using a parallel wire technique. OCT clearly demonstrated multiple small channels which had ambiguous findings on angiography and intravascular ultrasound. These structures showed a honeycomb-like appearance suggests the recanalized thrombi. A drug-eluting stent was subsequently deployed to fully cover the entire lesion.

CONCLUSIONS: OCT is useful to evaluate the accurate tissue characteristics of a recanalized thrombotic lesion. Because recanalized thrombi have multiple small channels and since there are some cases in which a part of the channel only flows into a side branch, it is necessary to carefully monitor wiring at the time of percutaneous coronary intervention.

Keywords: Coronary Artery Disease, percutaneous coronary intervention, Tomography, Optical Coherence

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923