{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T16:17:03Z","timestamp":1781713023326,"version":"3.54.5"},"reference-count":23,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T00:00:00Z","timestamp":1761609600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","jogc.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Obstetrics and Gynaecology Canada"],"published-print":{"date-parts":[[2026,1]]},"DOI":"10.1016\/j.jogc.2025.103165","type":"journal-article","created":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T07:29:20Z","timestamp":1761636560000},"page":"103165","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":1,"title":["Isolated Fetal Intra-Abdominal Umbilical Vein Varix: A Retrospective Review of Perinatal Outcomes and Review of the Literature"],"prefix":"10.1016","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-3253-5038","authenticated-orcid":false,"given":"Romina","family":"Levy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Coad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason","family":"Burrows","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.jogc.2025.103165_bib1","doi-asserted-by":"crossref","first-page":"73","DOI":"10.7863\/jum.1992.11.2.73","article-title":"Varix of the fetal intra-abdominal umbilical vein: comparison with normal","volume":"11","author":"Mahony","year":"1992","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.jogc.2025.103165_bib2","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1080\/14767058.2018.1487943","article-title":"Is umbilical vein varix associated with changes in cerebroplacental ratio?","volume":"33","author":"Grin","year":"2020","journal-title":"J Matern Fetal Neonatal Med"},{"key":"10.1016\/j.jogc.2025.103165_bib3","doi-asserted-by":"crossref","first-page":"11","DOI":"10.7863\/jum.1994.13.1.11","article-title":"Sonographic measurements of the umbilical cord and vessels during normal pregnancies","volume":"13","author":"Weissman","year":"1994","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.jogc.2025.103165_bib4","doi-asserted-by":"crossref","first-page":"580","DOI":"10.1002\/uog.18895","article-title":"Fetal intra-abdominal umbilical vein varix: retrospective cohort study and systematic review and meta-analysis","volume":"51","author":"di Pasquo","year":"2018","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.jogc.2025.103165_bib5","doi-asserted-by":"crossref","first-page":"3393","DOI":"10.1080\/14767058.2019.1685969","article-title":"Perinatal outcomes of fetal intra-abdominal umbilical vein varix: a multicenter cohort study","volume":"34","author":"Novoa","year":"2021","journal-title":"J Matern Fetal Neonatal Med"},{"key":"10.1016\/j.jogc.2025.103165_bib6","doi-asserted-by":"crossref","first-page":"440","DOI":"10.1159\/000078997","article-title":"Anomalies of the fetal venous system: a report of 26 cases and review of the literature","volume":"19","author":"Viora","year":"2004","journal-title":"Fetal Diagn Ther"},{"key":"10.1016\/j.jogc.2025.103165_bib7","doi-asserted-by":"crossref","first-page":"181","DOI":"10.5468\/ogs.2014.57.3.181","article-title":"Clinical characteristics and outcomes of antenatal fetal intra-abdominal umbilical vein varix detection","volume":"57","author":"Lee","year":"2014","journal-title":"Obstet Gynecol Sci"},{"key":"10.1016\/j.jogc.2025.103165_bib8","doi-asserted-by":"crossref","first-page":"282","DOI":"10.1002\/uog.6233","article-title":"Pregnancy outcome after ultrasound diagnosis of fetal intra-abdominal umbilical vein varix","volume":"33","author":"Byers","year":"2009","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.jogc.2025.103165_bib9","doi-asserted-by":"crossref","first-page":"273","DOI":"10.7863\/jum.2011.30.2.273","article-title":"Isolated fetal intra-abdominal umbilical vein varix: clinical importance and recommendations","volume":"30","author":"Mankuta","year":"2011","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.jogc.2025.103165_bib10","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1002\/pd.4098","article-title":"Long-term outcomes of children with umbilical vein varix diagnosed prenatally","volume":"33","author":"Melcer","year":"2013","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.jogc.2025.103165_bib11","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1002\/pd.2219","article-title":"Isolated fetal umbilical vein varix--prenatal sonographic diagnosis and suggested management","volume":"29","author":"Weissmann-Brenner","year":"2009","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.jogc.2025.103165_bib12","doi-asserted-by":"crossref","first-page":"595","DOI":"10.1002\/pd.6538","article-title":"Isolated fetal umbilical vein varix and the association with intrauterine fetal death and fetal growth restriction: a systematic review, meta-analysis, and nested retrospective cohort study","volume":"44","author":"Koorn","year":"2024","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.jogc.2025.103165_bib13","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1002\/uog.1815","article-title":"Fetal intra-abdominal umbilical vein varix: what is the clinical significance?","volume":"25","author":"Fung","year":"2005","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.jogc.2025.103165_bib14","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1002\/pd.897","article-title":"Adverse outcome of isolated fetal intra-abdominal umbilical vein varix despite close monitoring","volume":"24","author":"Valsky","year":"2004","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.jogc.2025.103165_bib15","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1007\/s00404-013-2743-x","article-title":"The prenatal diagnosis of isolated fetal varix of the intra-abdominal umbilical vein is associated with favorable neonatal outcome at term: a case series","volume":"288","author":"Bas-Lando","year":"2013","journal-title":"Arch Gynecol Obstet"},{"issue":"Suppl 1","key":"10.1016\/j.jogc.2025.103165_bib16","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1002\/ijgo.13522","article-title":"FIGO (international Federation of Gynecology and Obstetrics) initiative on fetal growth: best practice advice for screening, diagnosis, and management of fetal growth restriction","volume":"152","author":"Melamed","year":"2021","journal-title":"Int J Gynaecol Obstet"},{"key":"10.1016\/j.jogc.2025.103165_bib17","doi-asserted-by":"crossref","first-page":"505","DOI":"10.1136\/jmedgenet-2020-106896","article-title":"Prenatal clinical manifestations in individuals with COL4A1\/2 variants","volume":"58","author":"Itai","year":"2021","journal-title":"J Med Genet"},{"key":"10.1016\/j.jogc.2025.103165_bib18","doi-asserted-by":"crossref","first-page":"601","DOI":"10.1002\/pd.6113","article-title":"COL4A1\/COL4A2 and inherited platelet disorder gene variants in fetuses showing intracranial hemorrhage","volume":"42","author":"Coste","year":"2022","journal-title":"Prenat Diagn"},{"key":"10.1016\/j.jogc.2025.103165_bib19","doi-asserted-by":"crossref","first-page":"783","DOI":"10.1002\/uog.22106","article-title":"Prevalence of COL4A1 and COL4A2 mutations in severe fetal multifocal hemorrhagic and\/or ischemic cerebral lesions","volume":"57","author":"Maurice","year":"2021","journal-title":"Ultrasound Obstet Gynecol"},{"key":"10.1016\/j.jogc.2025.103165_bib21","doi-asserted-by":"crossref","first-page":"1680","DOI":"10.7863\/ultra.32.9.1680","article-title":"Isolated umbilical vein varix with a poor outcome despite close fetal surveillance","volume":"32","author":"Brookfield","year":"2013","journal-title":"J Ultrasound Med"},{"key":"10.1016\/j.jogc.2025.103165_bib22","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1080\/14767058.2016.1278208","article-title":"Fetal intraabdominal umbilical vein varix: antenatal diagnosis and management","volume":"31","author":"Ozek","year":"2018","journal-title":"J Matern Fetal Neonatal Med"},{"key":"10.1016\/j.jogc.2025.103165_bib23","doi-asserted-by":"crossref","first-page":"268","DOI":"10.12891\/ceog3167.2016","article-title":"Umbilical intra-abdominal vein varix: a case report and review of the literature","volume":"43","author":"Virdis","year":"2016","journal-title":"Clin Exp Obstet Gynecol"},{"key":"10.1016\/j.jogc.2025.103165_bib24","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1007\/s00404-004-0608-z","article-title":"Fetal intra-abdominal umbilical vein dilatation associated with notching in umbilical artery","volume":"271","author":"Baytur","year":"2005","journal-title":"Arch Gynecol Obstet"}],"container-title":["Journal of Obstetrics and Gynaecology Canada"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1701216325004116?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1701216325004116?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T00:08:31Z","timestamp":1768522111000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1701216325004116"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1]]},"references-count":23,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2026,1]]}},"alternative-id":["S1701216325004116"],"URL":"https:\/\/doi.org\/10.1016\/j.jogc.2025.103165","relation":{},"ISSN":["1701-2163"],"issn-type":[{"value":"1701-2163","type":"print"}],"subject":[],"published":{"date-parts":[[2026,1]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Isolated Fetal Intra-Abdominal Umbilical Vein Varix: A Retrospective Review of Perinatal Outcomes and Review of the Literature","name":"articletitle","label":"Article Title"},{"value":"Journal of Obstetrics and Gynaecology Canada","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jogc.2025.103165","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2025 The Author. Published by Elsevier Inc. on behalf of The Society of Obstetricians and Gynaecologists of Canada\/La Soci\u00e9t\u00e9 des obst\u00e9triciens et gyn\u00e9cologues du Canada.","name":"copyright","label":"Copyright"}],"article-number":"103165"}}