{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T23:35:11Z","timestamp":1777937711014,"version":"3.51.4"},"reference-count":9,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T00:00:00Z","timestamp":1751414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T00:00:00Z","timestamp":1751414400000},"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":["Pediatr Dev Pathol"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:p>We present a unique case of a 33-year-old gravida that was referred to our hospital with an umbilical vessel aneurysm presenting as a large placental cyst on ultrasound. Although the 20-week anomaly scan showed no structural abnormalities, routine fetal biometry scanning at 30\u2009weeks of gestation revealed an abnormal placental cystic structure, located subchorionic under the umbilical cord insertion. Given the uncertainty of the origin of the structure\u2019s origin and its unpredictable evolution with possible adverse effect on the fetus, a cesarean section was performed delivering a healthy baby. Histopathological examination of the placenta showed an aneurysmal vein with thinning of the vessel wall and fragmented smooth muscle. Umbilical cord aneurysm represents an exceptionally rare placental anomaly, with umbilical vein aneurysms being associated with variable fetal mortality rates, ranging from those observed in uncomplicated pregnancies to 82% in documented cases. Therefore, a multidisciplinary approach is essential to optimize fetal outcomes.<\/jats:p>","DOI":"10.1177\/10935266251352897","type":"journal-article","created":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T08:19:24Z","timestamp":1751444364000},"page":"495-498","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Umbilical Vessel Aneurysm Presenting a Large Placental Cyst: A Unique Case and Literature Review"],"prefix":"10.1177","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1873-0821","authenticated-orcid":false,"given":"Veronique","family":"Schiffer","sequence":"first","affiliation":[{"name":"Department of Gynaecology and Obstetrics, Maastricht University Medical Center, Maastricht, The Netherlands"},{"name":"GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ina","family":"Thijs","sequence":"additional","affiliation":[{"name":"Department of Pathology, Maastricht University Medical Center, Maastricht, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Salwan","family":"Al-Nasiry","sequence":"additional","affiliation":[{"name":"Department of Gynaecology and Obstetrics, Maastricht University Medical Center, Maastricht, The Netherlands"},{"name":"GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stijn van","family":"Teeffelen","sequence":"additional","affiliation":[{"name":"Department of Gynaecology and Obstetrics, Maastricht University Medical Center, Maastricht, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carmen","family":"Severens-Rijvers","sequence":"additional","affiliation":[{"name":"GROW, School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands"},{"name":"Department of Pathology, Maastricht University Medical Center, Maastricht, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,7,2]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.7863\/jum.2002.21.6.641"},{"key":"e_1_3_3_3_2","first-page":"285","article-title":"Subchorionic placental cyst: a cause of fetal growth retardation-ultrasound and color-flow Doppler diagnosis and follow-up","volume":"88","author":"Raga F","year":"1996","unstructured":"Raga F, Ballester MJ, Osborne NG, et al. Subchorionic placental cyst: a cause of fetal growth retardation-ultrasound and color-flow Doppler diagnosis and follow-up. J Natl Med Assoc.1996; 88:285-288.","journal-title":"J Natl Med Assoc"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1155\/2021\/2433252"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF02390361"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.3389\/fmed.2022.1083806"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/apm.12849"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1469-0705.2001.00313.x"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/s0301-2115(99)00167-0"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.7863\/jum.1994.13.12.992"}],"container-title":["Pediatric and Developmental Pathology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/10935266251352897","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/10935266251352897","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/10935266251352897","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T04:11:53Z","timestamp":1777695113000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/10935266251352897"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,7,2]]},"references-count":9,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2025,11]]}},"alternative-id":["10.1177\/10935266251352897"],"URL":"https:\/\/doi.org\/10.1177\/10935266251352897","relation":{},"ISSN":["1093-5266","1615-5742"],"issn-type":[{"value":"1093-5266","type":"print"},{"value":"1615-5742","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,7,2]]}}}