The number of fetuses with an abnormal increased first trimester nuchal translucency (NT), but confirmed normal karyotype and anatomy is relatively small and therefore a challenge for prenatal counseling. Universal guidelines are still needed for a systematic work-up, how to decide on the rewarding cut-off for this policy as well as how to counsel patients with an increased NT but with euploid fetuses. The current review aims to address some of these issues.
Department of Obstetrics and Gynecology, Assaf Harofe Medical Center, Zerifin, affiliated with the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. intposgr@post.tau.ac.il
