Delayed endothelialization after polytetrafluoroethylene-covered stent implantation for coronary aneurysm.
A polytetrafluoroethylene (PTFE)-covered stent is specially used to treat coronary perforation complicating percutaneous intervention in order to prevent the aneurysm from rupturing, but until now it has not been known if endothelialization occurs inside this type of stent. A patient with a giant aneurysm of the right coronary artery underwent successful implantation of a PTFE-covered stent. Angiography at 9-month follow-up showed focal restenosis at the proximal edge of the stent and coronary angioscopy revealed restenosis as a result of thrombus formation. Absence of endothelialization in the covered stent was also detected by angioscopy and optical coherence tomography. These findings suggest that in-stent thrombosis must be prevented after PTFE-covered stent implantation.
Takano
Masamichi
M
Division of Cardiology, Nippon Medical School, Tokyo, Japan. takanom@nms.ac.jp
Yamamoto
Masanori
M
Inami
Shigenobu
S
Xie
Yong
Y
Murakami
Daisuke
D
Okamatsu
Kentaro
K
Ohba
Takayoshi
T
Seino
Yoshihiko
Y
Mizuno
Kyoichi
K
D000368:Aged; D003323:Coronary Aneurysm / Q000628:therapy*; D017023:Coronary Angiography; D023903:Coronary Restenosis / Q000175:diagnosis* / Q000473:pathology*; D003331:Coronary Vessels / Q000473:pathology*; D004730:Endothelium, Vascular / Q000473:pathology*; D006801:Humans; D008297:Male; D011138:Polytetrafluoroethylene; D015607:Stents; D041623:Tomography, Optical Coherence
D011138:Polytetrafluoroethylene