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Four online databases were used for the systematic review, and studies that reported the prevalence of IMA variants were considered eligible for inclusion. A statistical meta-analysis was conducted using R programming software with a random-effects model to calculate the pooled prevalence of the variants.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Twenty-three (23) studies were included in this analysis. The IMA typically originated at the 3rd lumbar vertebra (L3) level, occurring in 70.16% of cases. The most common branching pattern of the IMA was bifurcated, indicating a pooled prevalence of 63.89%. This predominant pattern involved the IMA bifurcating into the left colic artery (LCA) and a common trunk for both the superior rectal artery (SRA) and the sigmoid artery (SA), with a pooled prevalence of 46.09%. The IMA trifurcation and tetrafurcation had pooled prevalences of 27.35% and 11.62%, respectively. The diameter of the IMA had a pooled mean of 41.41\u00a0mm, and the distance from the IMA\u2019s origin to the LCA had a pooled mean of 40.67\u00a0mm.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This review of existing literature delineates the IMA levels of origin, branching patterns, and morphometric characteristics. A comprehensive understanding of the surgical anatomy of this vessel is imperative during colorectal cancer procedures. Consequently, surgeons operating in this anatomical region must possess an in-depth knowledge of typical and variant anatomical structures.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00276-025-03657-1","type":"journal-article","created":{"date-parts":[[2025,5,24]],"date-time":"2025-05-24T01:43:21Z","timestamp":1748051001000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["The anatomy of the inferior mesenteric artery: a systematic review with meta-analysis"],"prefix":"10.1007","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-0122-2436","authenticated-orcid":false,"given":"George","family":"Triantafyllou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6734-6313","authenticated-orcid":false,"given":"Nektarios","family":"Belimezakis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7727-7804","authenticated-orcid":false,"given":"Orestis","family":"Lyros","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0355-0417","authenticated-orcid":false,"given":"Nikolaos","family":"Arkadopoulos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-5974-0599","authenticated-orcid":false,"given":"Fotis","family":"Demetriou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8559-8969","authenticated-orcid":false,"given":"George","family":"Tsakotos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4831-8005","authenticated-orcid":false,"given":"Maria","family":"Piagkou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,5,24]]},"reference":[{"issue":"4","key":"3657_CR1","doi-asserted-by":"crossref","first-page":"827","DOI":"10.5603\/FM.a2020.0115","volume":"80","author":"A Balcerzak","year":"2021","unstructured":"Balcerzak A, Kwa\u015bniewska O, Podg\u00f3rski M, Polguj M (2021) Types of inferior mesenteric artery: a proposal for a new classification. 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