Trisomy 18 Anomalies on Sonography and Calculated Risk of Chromosomal Abnormalities During First Trimester
Ron Maymon, Arie Herman, Eli Dreazen, Mati Glasner, Zvi Weinraub
Ultrasound Unit, Dept. of Obstetrics and Gynecology, Assaf Harofeh Medical Center, Zrifin, and Sackler School of Medicine, Tel Aviv University; and Women's Health Center, Kupat Holim, Holon Branch, Tel Aviv-Jaffa District
Trisomy 18 is a chromosomal disorder giving multiple anomalies. Its frequency depends on maternal age. We report a 28-year-old woman in her first pregnancy, who underwent first trimester scanning for screening. Due to increased nuchal translucency and exomphalos, chorionic villous sampling was performed. Cytogenetic diagnosis was trisomy 18 and termination of pregnancy was carried out immediately.