title: Unusual peri-stent strut contrast staining 6 years after sirolimus-eluting stent implantation: an "ant colony-like" appearance.
abstract: A 60-year-old man with a previous history of sirolimus-eluting stent implantation was admitted because of chest pain. Coronary angiography revealed nonsignificant in-stent luminal narrowing at the previously stented segment with an unusual linear peri-stent strut contrast staining. Frequency-domain optical coherence tomography showed a cavity at the segment connecting to the coronary lumen at the distal part of the stent. This unusual "ant-colony"-like appearance of the stented segment may be a subtype of the incomplete stent apposition and/or interstrut hollows.
authors.affiliation: Division of Cardiology, Kawasaki Medical School, 577 Matsushima, Kurashiki, 701-0192, Japan.
authors.forename: Yoji
authors.initials: Y
authors.lastname: Neishi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Okura
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yoshida
mesh_terms: D002317:Cardiovascular Agents / Q000008:administration & dosage*; D017023:Coronary Angiography; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000473:pathology*; D054855:Drug-Eluting Stents; D006801:Humans; D008297:Male; D008875:Middle Aged; D062645:Percutaneous Coronary Intervention / Q000009:adverse effects / Q000295:instrumentation*; D011237:Predictive Value of Tests; D011474:Prosthesis Design; D020123:Sirolimus / Q000008:administration & dosage*; D013997:Time Factors; D041623:Tomography, Optical Coherence; D016896:Treatment Outcome
chemical_list: D002317:Cardiovascular Agents; D020123:Sirolimus