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DLR Deutsches Zentrum f\u00fcr Luft- und Raumfahrt","award":["01KU2001","01KU2001"],"award-info":[{"award-number":["01KU2001","01KU2001"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Arch Gynecol Obstet"],"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Purpose<\/jats:title>\n            <jats:p>In singleton pregnancies, routine ultrasound examinations in each trimester improves the diagnosis of fetal abnormalities and their management. In this study, we examine twin pregnancies and report on the detection of fetal anomalies in each trimester and postnatally as well as on the type of anomalies and their prevalence.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>This prospective multicenter study enrolled pregnant women with dichorionic (DC) and monochorionic diamniotic (MCDA) twins at gestational weeks (GA) 11\u2009+\u20090 to 13\u2009+\u20096 in six medical centers (two in Germany, and one each in Spain, Canada, Italy, and Israel). Pregnancies were dated by the crown-rump length of the larger twin. Detailed scans were performed according to the guidelines of the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) at enrollment at gestational week (GA) 11\u2009+\u20090 to 13\u2009+\u20096, and at GA 20\u2009+\u20090 to 22\u2009+\u20096 and GA 28\u2009+\u20090 to 32\u2009+\u20096. Neonatal examinations were conducted in each case. Malformations were confirmed after delivery or postmortem in cases of fetal death or termination of pregnancy (TOP).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Of the 649 twin pregnancies (1298 live fetuses) at enrollment, there were 436 (70.6%) DC and 182 (29.4%) MCDA pregnancies. In total, 1168 babies were liveborn to 618 mothers (808 DC and 360 MCDA twins) after excluding cases lost to follow-up and TOPs. Anomalies were identified in 4.1% of the fetuses (48\/1168). Of the 48 fetuses with anomalies, 17 (35.4%) were identified in the first, 21 (43.8%) in the second, and 6 (12.5%) in the third trimester. Additional 4 (8.3%) were identified postnatally. Of the anomalies, 37 were in fetuses from DC twins (4.57%), and 11 (3.05%) in MCDA twins.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>We demonstrate the utility of detailed fetal scans in twin pregnancies in all three trimesters. First- and second-trimester diagnosis enables genetic counseling and testing, and informed parental decisions of pregnancy management. In addition to alerting the parents to the presence of fetal anomalies, third-trimester scans enhanced delivery planning and newborn care.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00404-025-08044-0","type":"journal-article","created":{"date-parts":[[2025,5,5]],"date-time":"2025-05-05T09:18:10Z","timestamp":1746436690000},"page":"537-545","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Pre-Twin Screen Consortium proposal for fetal structural anomalies evaluation across all three trimesters in twin pregnancies"],"prefix":"10.1007","volume":"312","author":[{"given":"R.","family":"Svirsky","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R.","family":"Maymon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N.","family":"Kugler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Orenstein","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. 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