The Influence of Preoperative Aneurysmal Thrombus Quantity and Distribution on the Development of Type II Endoleaks with Aneurysm Sac Enlargement After EVAR of AAA. Müller-Wille, R., Güntner, O., Zeman, F., Dollinger, M., Hälg, C., Beyer, L., P., Pfister, K., Kasprzak, P., Stroszczynski, C., & Wohlgemuth, W., A. Cardiovascular and interventional radiology, 39(8):1099-109, 8, 2016.
The Influence of Preoperative Aneurysmal Thrombus Quantity and Distribution on the Development of Type II Endoleaks with Aneurysm Sac Enlargement After EVAR of AAA. [link]Website  abstract   bibtex   
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.
@article{
 title = {The Influence of Preoperative Aneurysmal Thrombus Quantity and Distribution on the Development of Type II Endoleaks with Aneurysm Sac Enlargement After EVAR of AAA.},
 type = {article},
 year = {2016},
 identifiers = {[object Object]},
 keywords = {Aneurysm,Blood vessel prosthesis,Cardiovascular diseases,Endoleak,Vascular diseases},
 pages = {1099-109},
 volume = {39},
 websites = {http://link.springer.com/10.1007/s00270-016-1386-2,http://www.ncbi.nlm.nih.gov/pubmed/27307180},
 month = {8},
 day = {15},
 id = {7dd9b9df-b7ff-358d-848c-1281faaa22d1},
 created = {2017-10-23T15:16:55.902Z},
 accessed = {2017-04-20},
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 last_modified = {2017-10-24T20:58:18.341Z},
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 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.},
 bibtype = {article},
 author = {Müller-Wille, R and Güntner, O and Zeman, F and Dollinger, M and Hälg, C and Beyer, L P and Pfister, K and Kasprzak, P and Stroszczynski, C and Wohlgemuth, W A},
 journal = {Cardiovascular and interventional radiology},
 number = {8}
}
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