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© 2006 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 25:711-717 • 0278-4297

Prenatal Diagnosis of Turner Syndrome

Report on 69 Cases

Csaba Papp, MD, Artur Beke, MD, Gabor Mezei, MD, Zsanett Szigeti, MD, Zoltán Bán, MD and Zoltan Papp, MD

First Department of Obstetrics and Gynecology, Semmelweis University, Faculty of Medicine, Budapest, Hungary.

Address correspondence to Csaba Papp, MD, First Department of Obstetrics and Gynecology, Semmelweis University, Faculty of Medicine, H-1088 Budapest, Baross ut 27, Hungary. E-mail: papp{at}noi1.sote.hu

Objective. This study was conducted to evaluate the diagnostic value of different sonographic signs of fetuses with Turner syndrome in the first and second trimesters of pregnancy. Methods. Between 1990 and 2004, Turner syndrome was found in 69 of 22,150 fetal karyotypings. Congenital anomalies detected by sonography were analyzed. Results. Of the 514 (2.3%; 514/22,150) chromosome aberrations that were diagnosed, 69 Turner syndrome cases were found (13.4%; 69/514). Twenty-four fetuses had a 45,X karyotype (34.8%), and 45 fetuses were mosaic (65.2%). Forty-seven fetuses (68.1%; 47/69) showed symptoms on sonography. A substantial proportion of fetuses with Turner syndrome showed early-onset signs that could be detected in the first trimester (29.8%;14/69). The most common findings with sonography were hygroma colli (26.1%; 18/69), fetal hydrops (11.6%; 8/69), cardiac defects (13%; 9/69), and increased nuchal translucency (13%; 9/69). Among heart defects, coarctation of the aorta was the most common (44.4% of all cardial defects). Soft markers were also detected with relatively high frequency (23.2%; 16/69). Conclusions. The diagnosis of severe Turner syndrome is possible in early pregnancy. A search for soft markers during second-trimester sonography and extensive use of echocardiography may increase the detection rate of Turner syndrome.

Key Words: early pregnancy • echocardiography • prenatal sonography • Turner syndrome

Abbreviations: C, amniocentesis • BGN, biglycan • CH, cystic hygroma • CHD, congenital heart defect • CPC, choroid plexus cyst • CS, chondroitin sulfate • CVS, chorionic villus sampling • NT, nuchal translucency

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Copyright © 2006 by the American Institute of Ultrasound in Medicine.