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Are type II (branch vessel) endoleaks really benign?

Sonya N Tuerff¹, Caron B Rockman, Patrick J Lamparello

¹Department of Vascular Surgery, New York University Medical Center, New York 10016, USA.

Annals of Vascular Surgery

|March 21, 2002

Summary

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Type II endoleaks after endovascular aortic aneurysm (AAA) repair often resolve spontaneously within two years. While generally benign, delayed leaks require continued monitoring to understand their long-term impact.

Area of Science:

Vascular Surgery
Endovascular Interventions
Aortic Aneurysm Management

Background:

Type II endoleaks are a known complication of endovascular aortic aneurysm (AAA) repair.
Their natural history and clinical significance are not fully understood.
Previous studies suggest a potentially benign course, allowing for observation.

Purpose of the Study:

To investigate the natural history and clinical outcomes of type II endoleaks following endovascular AAA repair.
To assess the rate of spontaneous sealing and identify any associated risks.

Main Methods:

Prospective review of a database of all endovascular AAA repairs performed at the institution.
Analysis of type II endoleak occurrence, timing, and patient outcomes.

Related Experiment Videos

Documentation of aneurysm enlargement or rupture in affected patients.

Main Results:

Type II endoleaks demonstrated a generally benign course.
A significant proportion of type II endoleaks sealed spontaneously within a 2-year period.
No instances of aneurysm rupture or enlargement were observed in patients with untreated type II endoleaks.
Approximately one-third of type II endoleaks were identified after the initial postoperative CT scan, with unclear implications.

Conclusions:

Type II endoleaks following endovascular AAA repair appear to have a relatively benign natural history.
Spontaneous sealing is common within two years.
Careful and continued patient follow-up is essential to fully elucidate the outcomes associated with type II endoleaks, particularly delayed presentations.