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  • Title: [The role of ultrasonography in second trimester screening for fetal chromosome aberrations].
    Author: Papp C, Bán Z, Szigeti Z, Hajdú J, Beke A, Tóth-Pál E, Csaba A, Joó JG, Mezei G, Papp Z.
    Journal: Orv Hetil; 2006 Nov 05; 147(44):2131-7. PubMed ID: 17209302.
    Abstract:
    UNLABELLED: The role of ultrasound examination in second trimester screening for fetal aneuploidies. OBJECTIVE: Authors sought to determine the frequency of ultrasound findings in major chromosomal defects. They also tried to evaluate possible patterns of ultrasound signs of fetal chromosomal defects. METHODS: Through the time period of 15 years (1999-2004) 22,150 fetal karyotypings were done, and 514 abnormal karyotypes (2.3%, 514/22,150) were diagnosed prenatally. Congenital anomalies of these fetuses, detected by second trimester sonography, were analyzed in this study. RESULTS: Of the 514 chromosome aberrations, 207 fetuses with trisomy 21 (40.3%), 70 fetuses with trisomy 18 (13.6%), 28 fetuses with trisomy 13 (5.4%), 69 fetuses with Turner syndrome (13.4%) and 12 fetuses with triploidy (2.3%) were detected. The incidences of major structural defects and minor anomalies were evaluated then ultrasound signs with the highest incidences were established in each of the major chromosomal defects. CONCLUSION: This study may help to select the "optimal components" of the genetic sonogram that would assist the counseling of women for the risk of a chromosomal abnormality. Other advantages of such approach could be the standardization of the contents of ultrasound examination among different health care providers and institutions, and a decrease in false-positive rates.
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