Abstract:
PURPOSE:To determine the influence of preoperative aneurysmal thrombus quantity and distribution on the development of type II endoleak with aneurysm sac enlargement after endovascular aneurysm repair (EVAR). MATERIALS AND METHODS:We retrospectively analyzed the pre- and postoperatively performed CT scans of 118 patients who had follow-up imaging for at least 1 year after EVAR available. We assessed preoperative thrombus perimeter (T Peri), diameter (T Dia), cross-sectional area (T CSA), and volume (T Vol). The preoperative thrombus distribution was classified into no thrombus, semilunar-shaped (anterior, right side, left side, posterior) thrombus, and circumferential type thrombus. The number of preoperative patent aortic side branches (ASB) was identified. Endpoint was type II endoleak with aneurysm volume (A Vol) increase of ≥5 % during follow-up. RESULTS:During follow-up (2 years, range 1-9 years), 17 patients with type II endoleak had significant A Vol increase. Less preoperative T Peri, T Dia, T CSA, and T Vol were associated with A Vol increase. A circumferential thrombus distribution significantly protected against aneurysm enlargement (p = 0.028). The variables with the strongest significance for A Vol increase were preoperative T Vol/A Vol ratio (OR 0.95; p = 0.037) and number of patent ASB (OR 3.52; p < 0.001). CONCLUSION:A low preoperative T Vol/A Vol ratio and a high number of patent ASB were associated with aneurysm sac enlargement after EVAR.
journal_name
Cardiovasc Intervent Radioljournal_title
Cardiovascular and interventional radiologyauthors
Müller-Wille R,Güntner O,Zeman F,Dollinger M,Hälg C,Beyer LP,Pfister K,Kasprzak P,Stroszczynski C,Wohlgemuth WAdoi
10.1007/s00270-016-1386-2subject
Has Abstractpub_date
2016-08-01 00:00:00pages
1099-109issue
8eissn
0174-1551issn
1432-086Xpii
10.1007/s00270-016-1386-2journal_volume
39pub_type
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journal_title:Cardiovascular and interventional radiology
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