PMID: 11905430Mar 22, 2002Paper

Prediction of chorionicity in twin pregnancies at 10-14 weeks of gestation

BJOG : an International Journal of Obstetrics and Gynaecology
Stephen G M CarrollPhillipa Mm Kyle

Abstract

To examine the accuracy of sonographic determination of chorionicity in twin pregnancies at 10-14 weeks of gestation. Prospective study on the sonographic prediction of chorionicity at 10-14 weeks of gestation. During a 30 month period, from October 1997 to May 2000, 165 women attending the departments of fetal medicine or ultrasound. Sonographic criteria used in the diagnosis of chorionicity were the number of placental sites, the lambda (lambda) and T signs and the thickness of the inter-twin membrane. The diagnosis of chorionicity was made at the time of the ultrasound examination using all these features and subsequently compared with the postnatal diagnosis, confirmed either by placental histology or discordancy in infant sex. In 150 cases with confirmation of chorionicity following delivery, 116 were postnatally classified as dichorionic and 34 monochorionic. Prenatal ultrasound examination correctly identified chorionicity in 149 (99.3%) cases. The most reliable indicator for dichorionicity was a combination using the lambda sign or two separate placentae with a sensitivity and specificity of 97.4% and 100%, respectively. The most useful test in predicting monochorionicity was the T sign with a sensitivity of 100% and sp...Continue Reading

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Oct 19, 2020·Sherif Abdelkarim Mohammed Shazly

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Citations

Dec 16, 2004·Journal of Human Genetics·Kiyonori Miura, Norio Niikawa
Dec 21, 2002·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·N J Sebire
Sep 17, 2009·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Khaled M ElsayesChristine O Menias
Sep 23, 2014·Current Problems in Diagnostic Radiology·Sowmya Mahalingam, Manjiri Dighe
Jun 1, 2005·Clinics in Perinatology·Thomas Trevett, Anthony Johnson
Mar 1, 2005·European Journal of Obstetrics, Gynecology, and Reproductive Biology·José L BarthaPeter W Soothill
Jun 1, 2005·Clinics in Perinatology·Alisa B Modena, Vincenzo Berghella
May 25, 2013·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Erich CosmiSanto Davide Ferrara
Nov 23, 2012·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Yuk Jing LokeJeffrey M Craig
Dec 23, 2015·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Veronica SaraisEdgardo Somigliana
Mar 22, 2012·Acta Obstetricia Et Gynecologica Scandinavica·Elise HoffmannLillian Skibsted
Jan 7, 2011·Prenatal Diagnosis·Jennifer J WanDolores H Pretorius
Jul 2, 2015·Prenatal Diagnosis·Anna FicheraTiziana Frusca
Nov 20, 2016·BJOG : an International Journal of Obstetrics and Gynaecology
Nov 8, 2019·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Priyanka JhaAnne Kennedy

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