{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T01:13:24Z","timestamp":1777943604105,"version":"3.51.4"},"reference-count":26,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2017,4,10]],"date-time":"2017-04-10T00:00:00Z","timestamp":1491782400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Vascular"],"published-print":{"date-parts":[[2017,10]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>The objective of this study was to investigate the preoperatively definable risk factors which predict the aneurysm sac expansion caused by persistent type 2 endoleak after endovascular aneurysm repair.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Between 2008 and 2014, retrospective analysis was performed to examine the predictive risk factors for aneurysm sac enlargement caused by persistent type 2 endoleak, which was defined as a continuous endoleak present for more than six months. Aneurysm sac expansion was diagnosed if the maximum transverse diameter increased by 5\u2009mm or more compared with the preoperative measurement.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>During the study period, endovascular aneurysm repair was performed in 211 patients with abdominal aortic aneurysm and common iliac artery aneurysm. Sac enlargement for type 2 endoleaks was observed in 20 patients (9.5%). The presence of more than five patent lumbar arteries flowing into aneurysm sac in the preoperative computed tomography (hazard ratio, 3.37; 95% confidence interval, 1.24\u201310.8; p\u2009=\u20090.017) was a predictive factor for sac expansion caused by persistent type 2 endoleak on Cox regression analysis. The presence of a patent inferior mesenteric artery was not associated with the sac expansion caused by persistent type 2 endoleak.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The presence of more than five lumbar arteries flowing into the aneurysm sac was a preoperative risk factor for sac expansion caused by persistent type 2 endoleak.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/1708538117702787","type":"journal-article","created":{"date-parts":[[2017,4,11]],"date-time":"2017-04-11T00:58:56Z","timestamp":1491872336000},"page":"533-541","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Preoperative risk factors for aneurysm sac expansion caused by type 2 endoleak after endovascular aneurysm repair"],"prefix":"10.1177","volume":"25","author":[{"given":"Koichi","family":"Morisaki","sequence":"first","affiliation":[{"name":"Department of Vascular Surgery, Matsuyama Red Cross Hospital, Ehime, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Terutoshi","family":"Yamaoka","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Matsuyama Red Cross Hospital, Ehime, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuomi","family":"Iwasa","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Matsuyama Red Cross Hospital, Ehime, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahiro","family":"Ohmine","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Hiroshima Red Cross Hospital and Atomic-bomb Survivors Hospital, Hiroshima, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsushi","family":"Guntani","sequence":"additional","affiliation":[{"name":"Department of Vascular Surgery, Saiseikai Yahata General Hospital, Fukuoka, 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