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CASE REPORT
Endovascular treatment of asymptomatic free-floating thrombus in the carotid artery bifurcation: a direct aspiration first-pass technique under double balloon protection
  1. Ayumu Yamaoka,
  2. Kei Miyata,
  3. Satoshi Iihoshi and
  4. Nobuhiro Mikuni
  1. Neurosurgery, Sapporo Medical University, Sapporo, Hokkaido, Japan
  1. Correspondence to Dr Kei Miyata, miyata{at}sapmed.ac.jp

Abstract

Free-floating thrombus (FFT) in the carotid artery has been reported as a rare cause of acute ischaemic stroke. There are various treatment strategies, but higher risk of distal embolism may limit their applicability. A 77-year-old woman noticed right upper arm weakness. A CT angiogram revealed that a large floating thrombus had strayed across the carotid bifurcation, while another thrombus was present in the right axillary artery. As for the carotid FFT, in spite of anticoagulation therapy, the number of asymptomatic microthrombuses gradually increased on diffusion-weighted MRI. We performed endovascular therapy utilising two temporary occlusion balloon catheters and performed direct aspiration with a reperfusion catheter. The procedure was uneventful. We successfully performed a new endovascular technique for FFT in the carotid bifurcation. Our method is effective, minimally invasive and safe.

  • stroke
  • neurosurgery
  • radiology

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Footnotes

  • Contributors AY and KM designed the study and wrote the initial draft of the manuscript. SI and NM contributed to decision of the treatment strategy and assisted in the preparation of the manuscript. All the authors have contributed to data collection and interpretation and critically reviewed the manuscript. They approved the final version of the manuscript and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial, or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Patient consent for publication Obtained.