This is a first trimester scan in a fetus with monosomy X This is a first trimester scan in a fetus with monosomy X. Note the umbilical cyst and a thick nuchal translucency. (Image contributed by Christa Faschinbauer, MD) Source: FETAL SYNDROMES, Sonography in Obstetrics and Gynecology: Principles & Practice, 7e Citation: Fleischer AC, Toy EC, Lee W, Manning FA, Romero RJ. Sonography in Obstetrics and Gynecology: Principles & Practice, 7e; 2015 Available at: https://obgyn.mhmedical.com/DownloadImage.aspx?image=/data/books/1414/fle_ch20_f086.png&sec=76393986&BookID=1414&ChapterSecID=76393462&imagename= Accessed: March 02, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved