"Pseudoendoleak" - Residual intrasaccular contrast after endovascular stent-graft repair

W. Anthony Lee, Geoffrey D. Rubin, Bonnie L. Johnson, Frank Arko, Thomas J. Fogarty, Christopher K. Zarins

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: To present a unique demonstration of postoperative perigraft contrast masquerading as an endoleak following endovascular abdominal aortic aneurysm (AAA) repair. Case Report: A 66-year-old man underwent endovascular stent-graft repair of a 4.6-cm infrarenal AAA. The procedure was uncomplicated, and intraoperative completion angiography demonstrated good proximal and distal fixation of the stent-graft without an endoleak. A spiral computed tomographic (CT) angiogram obtained on postoperative day 2 revealed a large amount of extrastent contrast along the posterior aspect of the aneurysm sac. This defect had the appearance of an endoleak, but it was also present on the non-contrast images. A color-flow duplex examination performed on the same day showed a widely patent stent-graft with no evidence of extrastent flow. Conclusions: Contrast trapped in the aneurysm sac during endovascular aneurysm repair may be misinterpreted as an endoleak on postprocedural CT scans. "Pseudoendoleaks" can be distinguished from true endoleaks by examination of prebolus, noncontrast CT images, as well as by duplex ultrasound scanning.

Original languageEnglish (US)
Pages (from-to)119-123
Number of pages5
JournalJournal of Endovascular Therapy
Issue number1
StatePublished - 2002
Externally publishedYes


  • Abdominal aortic aneurysm
  • Computed tomography
  • Contrast medium
  • Duplex ultrasound
  • Endoleak

ASJC Scopus subject areas

  • Surgery
  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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