Morphological aspects of mural thrombi deposition residual lumen route in infrarenal abdominal aorta aneurisms

Acta Cir Bras. 2008;23 Suppl 1:151-6; discussion 156. doi: 10.1590/s0102-86502008000700024.


Purpose: To assess the most frequent deposition site of mural thrombi in infrarenal abdominal aorta aneurisms, as well as the route of the residual lumen.

Methods: Assessment of CT scan images from 100 patients presenting asymptomatic abdominal aorta aneurism, and followed at HC-FMRP-USP.

Results: In 53% of the cases the mural thrombus was deposited on the anterior wall; from these, in 22%, the residual lumen described a predominantly right sided route; in 22%, a left sided route; on the mid line in 5%; and crossing over the mid line in 1%. In 23%, the deposition of thrombi was concentric. In 11% it occurred on the posterior wall; from these, in 5%, the route of the residual anterior lumen was predominantly right sided; in 5%, left sided; and crossed over the mid line in 1%. In 13% complex morphological deposition patterns were found.

Conclusion: Mural thrombi formation was predominantly found on the anterior wall of the aneurismatic mass, with the route of the residual lumen projecting towards the posterior wall.

Publication types

  • Evaluation Study

MeSH terms

  • Aortic Aneurysm, Abdominal / diagnostic imaging*
  • Aortic Rupture / diagnostic imaging
  • Female
  • Heart Diseases / diagnostic imaging*
  • Humans
  • Male
  • Thrombosis / diagnostic imaging*
  • Tomography, X-Ray Computed