The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.
First and second trimester screening for fetal structural anomalies
Abstract
Fetal structural anomalies are found in up to 3% of all pregnancies and ultrasound-based screening has been an integral part of routine prenatal care for decades. The prenatal detection of fetal anomalies allows for optimal perinatal management, providing expectant parents with opportunities for additional imaging, genetic testing, and the provision of information regarding prognosis and management options. Approximately one-half of all major structural anomalies can now be detected in the first trimester, including acrania/anencephaly, abdominal wall defects, holoprosencephaly and cystic hygromata. Due to the ongoing development of some organ systems however, some anomalies will not be evident until later in the pregnancy. To this extent, the second trimester anatomy is recommended by professional societies as the standard investigation for the detection of fetal structural anomalies. The reported detection rates of structural anomalies vary according to the organ system being examined, and are also dependent upon factors such as the equipment settings and sonographer experience. Technological advances over the past two decades continue to support the role of ultrasound as the primary imaging modality in pregnancy, and the safety of ultrasound for the developing fetus is well established. With increasing capabilities and experience, detailed examination of the central nervous system and cardiovascular system is possible, with dedicated examinations such as the fetal neurosonogram and the fetal echocardiogram now widely performed in tertiary centers. Magnetic resonance imaging (MRI) is well recognized for its role in the assessment of fetal brain anomalies; other potential indications for fetal MRI include lung volume measurement (in cases of congenital diaphragmatic hernia), and pre-surgical planning prior to fetal spina bifida repair. When a major structural abnormality is detected prenatally, genetic testing with chromosomal microarray is recommended over routine karyotype due to its higher genomic resolution.
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“In experts' hands, most clinically important structural anomalies can be detected 1 .”
From ISUOG Practice Guidelines (updated): performance of the routine mid‐trimester fetal ultrasound scan (2022) · cites this paper as [1]
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- Karim, 2016, Systematic review of first trimester ultrasound screening in detecting fetal structural anomalies and factors affecting screening performance, Ultrasound Obstet Gynecol
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ISUOG Practice Guidelines (updated): performance of the routine mid‐trimester fetal ultrasound scan
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“Structural anomalies in fetuses can be detected in approximately 3% of all pregnancies [9].”
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“The second-trimester anomaly scan (SAS) screens for fetal structural anomalies at a gestational age (GA) of 18–21 weeks [1, 2].”
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ResultRidnõi, K., Muru, K., Keernik, M., Pajusalu, S., Ustav, E., Tammur, P., Mölter‐Väär, T., Kahre, T., Šamarina, U., Asser, K., et al. (2021) · Molecular Genetics & Genomic Medicine · doi:10.1002/mgg3.1787 · Cited by 3
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“Major fetal anomalies are detected in 2-3% of all live births (1) .”
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Coding and Legal Issues in Obstetric and Gynecologic Ultrasound
Shwayder, J. M., Copel, J. A., & Stohl, H. E. (2019) · Obstetrics and Gynecology Clinics of North America · doi:10.1016/j.ogc.2019.07.012 · Cited by 3
Snaifer, E., Hassan, H., Daher, L., Sabbagh, A. E., Farah, M., Farekh, I., & Chalouhi, G. E. (2020) · Journal of Ultrasound in Medicine · doi:10.1002/jum.15423 · Cited by 3
“On another hand, the reported detection rates of structural anomalies vary according to the organ system being examined, to the severity of the reported anomalies and are also dependent upon factors such as the equipment settings and sonographer experience.(18) In our study, we found that neurological, urinary and car…”
BackgroundHorton, N., Tolusso, L., Widmeyer, K. M., He, H., & Swarr, D. T. (2025) · Prenatal Diagnosis · doi:10.1002/pd.6810 · Cited by 3
“Compared to what is noted at delivery, approximately half of major structural anomalies can be detected in the first trimester, but the detection rates vary significantly depending on the organ system [9].”
Tzela, P., Antonakopoulos, N., Anastasopoulos, P., & Gourounti, K. (2021) · Acta Informatica Medica · doi:10.5455/aim.2021.29.288-292 · Cited by 3
“There are limitations, however, as ultrasound can exclude fetal structural anomalies by less than 70% in general and in some anatomical systems, such as the cardiovascular system, this percentage is significantly lower (3).”
BackgroundFirst trimester ultrasound in the age of cell‐free DNA screening: What are we missing?
Ramdaney, A., Mulligan, S., Wittman, T., & Wagner, C. (2022) · Prenatal Diagnosis · doi:10.1002/pd.6139 · Cited by 5
“Though many fetal findings are not apparent until the second trimester, approximately 50% of all major structural anomalies, including acrania/anencephaly, abdominal wall defects, holoprosencephaly and cystic hygroma, may be detected in the first trimester.(10,11) Recently, ACOG recommended that prenatal aneuploidy sc…”
BackgroundLin, M. F., He, X., Hao, C., He, M., Guo, H., Zhang, L., Xian, J., zheng, J., Xu, Q., Feng, J., et al. (2020) · doi:10.22541/au.158880224.43356313 · Cited by 2
Ongoing reanalysis of prenatal exome sequencing data leads to higher diagnostic yield
Li, L. ‐., & Li, D. (2022) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.24923 · Cited by 3
Yadav, M. C., Gowda, M., Chinta, N., Deodhare, K. G., & Murugesan, S. (2023) · Prenatal Diagnosis · doi:10.1002/pd.6431 · Cited by 2
Wilpers, A. B., & Lorch, S. A. (2025) · Journal of Perinatology · doi:10.1038/s41372-025-02340-y · Cited by 2
“These systemic privileges predispose community members to timely prenatal care entry and routine check-ups, increasing the likelihood of detecting fetal conditions early [11 – 13].”
Diagnostic Impact of Fetal MRI in 556 Fetuses: Where It Adds Value Beyond Ultrasound
Çakır, Z. E., Gölbaşı, H., Torun, R., Sağlam, C., Gercik, I., Aktaş, H. A., Can, S. T., Toka, I. G., Uçar, İ., Sarıoğlu, F. C., et al. (2025) · Journal of Clinical Medicine · doi:10.3390/jcm14196690 · Cited by 2
“The detection of fetal anomalies is essential for parental counseling as well as prenatal and postnatal management [8–10].”
Bronsgeest, K., Lust, E. E. R., Zaaijer, S. C. E., Henneman, L., Crombag, N. M. T. H., Bilardo, C. M., Galjaard, R. H., Sikkel, E., Teunissen, A. K. K., Bekker, M. N., et al. (2025) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.70131 · Cited by 2
A Survey on Genetic Disorder Prediction of Fetus from Ultrasound-Based Computer-Aided Diagnosis
Anitha, A., & Balaji, S. (2022) · International Conference on Electronics, Communication and Aerospace Technology (ICECA) · doi:10.1109/iceca55336.2022.10009264 · Cited by 2
“There have been a few preliminary studies [28] evaluating the use of rWES as a primary screening tool for the whole range of congenital abnormalities revealed by standard ultrasound imaging in pregnant women.”
BackgroundUltrasound in the First Trimester: How to Keep It Safe
Abramowicz, J. S. (2023) · Springer eBooks · doi:10.1007/978-3-031-24133-8_1 · Cited by 2
Jiang, S., Ye, J., Wáng, H., Wang, J., Chen, S., Zhang, Y., Du, Q., Yang, L., Wang, L., & Sun, K. (2023) · Cardiology Discovery · doi:10.1097/cd9.0000000000000089 · Cited by 2
Consecutive 5-year outcomes of chorionic villus sampling at a tertiary center
Kuyucu, M., Erdoğan, K. M., Adıyaman, D., Atakul, B. K., Gölbaşı, H., Kutbay, Y. B., Karasu, A. F. G., & Özeren, M. (2025) · Medicine · doi:10.1097/md.0000000000041582 · Cited by 2
Kruszka, P. S., Gropman, A. L., & Muenke, M. (2020) · doi:10.1002/9781119432692.ch31 · Cited by 2
Anamoly scan: A mandatory screening tool
Maini, M., Maan, M., & Kathpalia, S. K. (2022) · Indian Journal of Obstetrics and Gynecology Research · doi:10.18231/j.ijogr.2022.113 · Cited by 1
Yazdi, S. N. M., Parooie, F., Kazemi, M. A., Shirazi, M., Azadbakht, J., & Moradi, B. (2023) · Journal of diagnostic medical sonography · doi:10.1177/87564793231167429 · Cited by 1
Basic or detailed morphology scan in mid-trimester?
Leung, K. (2024) · Hong Kong Medical Journal · doi:10.12809/hkmj2310772 · Cited by 1
“5,13,14”
Wilson, R. D. (2024) · Best Practice & Research Clinical Obstetrics & Gynaecology · doi:10.1016/j.bpobgyn.2024.102520 · Cited by 2
Song, Y. W., Oh, J. S., Yoon, J. M., Ko, K. O., Lee, S. K., Kim, T. Y., & Lim, J. W. (2024) · Perinatology · doi:10.14734/pn.2024.35.3.92 · Cited by 1
Vlădăreanu, R., & Berceanu, C. (2024) · Donald School Journal of Ultrasound in Obstetrics & Gynecology · doi:10.5005/jp-journals-10009-2051 · Cited by 1
Minsart, A.-F., Adam, H., Ghenimi, N., Tahlak, M., Mirza, F., Akbar, A., & Sairam, S. (2025) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-025-07934-0 · Cited by 1
“It has been shown that superior detection rates are associated with dedicated ultrasound practices and tertiary care facilities [8, 10–13].”
InfluentialKamihara, Y., OZAWA, K., Ogawa, K., Muromoto, J., Sugibayashi, R., Wada, S., & Sago, H. (2025) · Journal of Medical Ultrasonics · doi:10.1007/s10396-025-01609-1 · Cited by 1
“Fetal structural abnormalities are generally found in 2–3% of all pregnancies [1], but our observed rate was lower than this reported range.”
InfluentialHu, J., Xu, X. G., Jiang, P., Huang, R., Yuan, J., Lu, L. Z.-B., & Han, J. (2026) · Biomedicines · doi:10.3390/biomedicines14010107 · Cited by 2
“Despite this, the imaging phenotypes of fetal MCD are often complex and non-specific, making it difficult to accurately identify potential molecular causes, assess prognosis, and predict recurrence risk based solely on imaging [9–12].”
Placenta, Abnormal Conception, and Prematurity
Sergi, C. M. (2020) · Springer eBooks · doi:10.1007/978-3-662-59169-7_18 · Cited by 1
Hyde, G. A., Fry, A., Raghavan, A., & WHITBY, E. H. (2020) · Acta Radiologica Open · doi:10.1177/2058460120970541 · Cited by 1
“Fetal structural abnormalities are primarily identified by ultrasonography (US) as part of routine antenatal care.(1) Although cost-effective and widely used, US is limited in the amount of information it can provide.”
Background
Metadata
- Authors
- Edwards, L., & Hui, L.
- Affiliations
- Royal Hobart Hospital (AU)
- The University of Melbourne (AU)
- Corresponding author
- Hui, Lisa
- ORCID
- Hui, Lisa
- Venue
- Seminars in Fetal and Neonatal Medicine
- Publisher
- Elsevier BV
- Published
- 2018-04
- Volume
- 23
- Issue
- 2
- Pages
- 102-111
- ISSN
- 1744-165X (ISSN-L)
- OpenAlex
- W2772189056
- Cited by
- 179
- References
- 57
- Citations by year
- 2026: 13 · 2025: 25 · 2024: 28 · 2023: 27 · 2022: 27 · 2021: 26 · 2020: 20 · 2019: 9 · 2018: 4
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Seminars in Fetal and Neonatal Medicine (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Screening and Diagnostics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
- Health Sciences › Medicine › Surgery › Congenital Anomalies and Fetal Surgery
- Keywords
- fetal structural anomalies, prenatal ultrasound screening, first-trimester screening, anencephaly, acrania, abdominal wall defect, holoprosencephaly, cystic lymphangioma, fetal neurosonography, fetal echocardiography, fetal MRI, congenital diaphragmatic hernia, spina bifida, chromosomal microarray analysis, prenatal diagnosis
- MeSH terms
- Congenital Abnormalities, Female, Humans, Magnetic Resonance Imaging, Male, Pregnancy, Pregnancy Trimester, First, Pregnancy Trimester, Second, Prenatal Diagnosis, Ultrasonography, Prenatal, Practice Guidelines as Topic, Imaging, Three-Dimensional, Nuchal Translucency Measurement, Neuroimaging
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