Hayatsura Hanada
Japan
Research Article
Stent Coning Induces Distal Stent Edge Stenosis
Author(s): Masanori Tsutsumi, Taichirou Mizokami, Kimiya Sakamoto, Sumito Narita, Kanji Nakai, Minoru Iko, Iwae Yu, Takafumi Mitsutake, Ayumu Eto, Hayatsura Hanada, Hiroshi Aikawa and Kiyoshi KazekawaMasanori Tsutsumi, Taichirou Mizokami, Kimiya Sakamoto, Sumito Narita, Kanji Nakai, Minoru Iko, Iwae Yu, Takafumi Mitsutake, Ayumu Eto, Hayatsura Hanada, Hiroshi Aikawa and Kiyoshi Kazekawa
Purpose: Stent coning is conular morphological changes at the distal end of wire-braided closed-cell stents. We
discuss its incidence, predictors, and outcomes.
Materials and Methods: We reviewed data on 178 carotid arteries (172 patients) that were treated by carotid
artery stenting (CAS) with wire-braided stents. All patients were followed-up by carotid duplex ultrasound (DUS)
studies to detect in-stent restenosis (ISR) and stent-edge stenosis. In patients manifesting stent coning, we also
obtained neck radiographs.
Results: Stent coning was detected in 11 arteries (6.2%). Internal carotid artery/common carotid artery ratio and
use of a post dilation balloon were associated with coning (p<0.05). On radiographs obtained at 3-months follow-up,
all instances of coning had disappeared spontaneously. Follow-up DUS detected 5 inst.. View More»
