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Updated: Nov 27, 2025

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
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The TREO abdominal aortic stent-graft system.

Laura Boitano1, Matthew J Eagleton1

  • 1Division of Vascular & Endovascular Surgery, Massachusetts General Hospital, 55 Fruit Street, WACC 440, Boston, MA 02114, USA.

Future Cardiology
|December 4, 2020
PubMed
Summary

Endovascular aneurysm repair using the TREO stent-graft offers a less invasive option for abdominal aortic aneurysms. Clinical outcomes demonstrate excellent performance, potentially reducing the need for reintervention.

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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Area of Science:

  • Vascular Surgery
  • Medical Device Technology
  • Clinical Outcomes Research

Background:

  • Endovascular aneurysm repair (EVAR) is a preferred treatment for abdominal aortic aneurysms due to lower peri-operative mortality than open surgery.
  • Long-term EVAR success is limited by reintervention rates, necessitating device advancements.
  • The Terumo Aortic TREO abdominal aortic stent-graft was FDA-approved in 2020.

Purpose of the Study:

  • To review the clinical performance of the Terumo Aortic TREO abdominal aortic stent-graft.
  • To highlight device improvements aimed at enhancing long-term EVAR outcomes.
  • To present available clinical data from US trials and global experience.

Main Methods:

  • Review of clinical outcomes data from the US trial of the TREO stent-graft.
Keywords:
TREOabdominal aortic aneurysmendoleakendovascular aneurysm repairstent-graftterumo

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  • Inclusion of global experience with the TREO stent-graft.
  • Analysis of reintervention rates and device-related complications.

    • Main Results:

    • The TREO stent-graft demonstrated excellent performance in clinical studies.
    • Low rates of reintervention were observed in the US trial.
    • Positive global experience suggests favorable long-term outcomes.

    Conclusions:

    • The Terumo Aortic TREO stent-graft represents a significant device improvement in EVAR.
    • Its excellent performance may reduce the need for long-term reinterventions.
    • Further data will continue to define the long-term efficacy of this device.