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Technical success rates and long-term outcomes were evaluated including technical factors associated with endoleak recurrence and rupture. One hundred transcatheter embolisations were performed for type 2 endoleaks in 72 patients (64 male and 8 female).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Technical success (cessation of flow in the endoleak on angiography) was achieved in 77\/100 (77%) procedures. Clinical success (freedom from sac growth on surveillance) was achieved in 82% at 12 months, 70% at 24 months and 59% at 60 months. Persistent endoleaks were found in 27%, with 7% developing a new type 2 and 14% developing new type 1, 3 or 5 endoleaks. The rupture rate was 7%, including 2\/7 persistent type 2 endoleaks, 4\/7 new type 1 or 3 endoleaks and 1\/7 type 5 endoleak. Embolisation was performed either via a transarterial route (74%) or via direct sac puncture (24%), the latter demonstrating a significant correlation with technical success (\n                      <jats:italic>p<\/jats:italic>\n                      =0.018).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This study confirms the importance of embolisation as the main treatment modality of type 2 endoleaks with freedom from sac growth achieved in 70% of patients at 24 months. However, this remains a complex entity with persistent sac growth, risking the development of type 1 or 3 endoleaks, which carry a risk of late sac rupture.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Graphical Abstract<\/jats:title>\n                  <\/jats:sec>","DOI":"10.1007\/s00270-025-04272-8","type":"journal-article","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T19:43:13Z","timestamp":1769715793000},"page":"496-507","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Embolisation of Type 2 Endoleaks Associated with Sac Expansion\u2014Outcomes from a Single-Centre Cohort"],"prefix":"10.1007","volume":"49","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4147-4777","authenticated-orcid":false,"given":"Joo-Young","family":"Chun","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shyamal","family":"Patel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seyed","family":"Ameli-Renani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vyzantios","family":"Pavlidis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Morgan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,29]]},"reference":[{"key":"4272_CR1","doi-asserted-by":"publisher","first-page":"161","DOI":"10.1007\/s00270-023-03629-1","volume":"47","author":"JY Chun","year":"2024","unstructured":"Chun JY, de Haan M, Maleux G, et al. 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Formal institutional ethics approval is not required for retrospective studies at our institution and was therefore not sought.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical Approval"}}]}}