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Thoracic CT findings following endovascular stent-graft treatment for thoracic aortic aneurysm

Masaki Ishida1, Noriyuki Kato, Tadanori Hirano

  • 1Department of Radiology, Mie University Hospital, Mie, Japan. mishida@clin.medic.mie-u.ac.jp

Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists
|August 29, 2007
PubMed

Insights

Transient computed tomographic (CT) findings after endovascular repair of thoracic aortic aneurysm (TAA) were investigated. Dissection-related TAA may increase the risk of aortic neck dilatation following TAA repair.

Area of Science:

  • Vascular Surgery
  • Radiology
  • Medical Imaging

Background:

  • Endovascular repair is a common treatment for thoracic aortic aneurysms (TAA).
  • Understanding post-procedural imaging findings is crucial for patient management.

Purpose of the Study:

  • To investigate transient computed tomographic (CT) findings and morphological characteristics of the descending thoracic aorta after endovascular repair of TAA.
  • To identify potential risk factors for adverse outcomes.

Main Methods:

  • Retrospective study of 35 patients who underwent endovascular TAA repair with custom-made endoprostheses.
  • Thoracic CT follow-up for over 3 months to assess periaortic changes, pleural effusion, endoleaks, stent-graft migration, and aneurysm size.
  • Analysis of TAA etiologies including degenerative, dissection-related, traumatic, anastomotic, and penetrating ulcers.

Main Results:

  • Periaortic changes and increased pleural effusion were transient and resolved without treatment in most patients.
  • Low rates of secondary endoleak (2.9%) and stent-graft migration (2.9%) were observed.
  • Aneurysm size increased in 14.3% of cases, with aortic neck dilatation noted in two dissection-related TAA patients.

Conclusions:

  • Transient CT findings are common after endovascular TAA repair and typically resolve.
  • Aortic neck dilatation is less frequent than after abdominal repairs but may be associated with dissection-related TAA.
Abstract

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