International Journal of Academic Health and Medical Research (IJAHMR)   Year: 2022 | Volume: 6 | Issue: 1 | Page No.: 64-67 Trisomy 18 Or Edwards Syndrome in Prenatal Care: A Case Reportla Trisomie 18 Ou Syndrome d'Edwards En Post-Natalla Trisomie 18 Ou Syndrome d'Edwards En Post-Natal a trisomie 18 ou syndrome d'Edwards en post-natal Download PDF M. Bendahhou Idrissi, J.Abbou, M. K.Saoud, N. Mamouni, S. Errarhay, C. Bouchikhi, A. Banani Abstract: Trisomy 18 is a chromosomal disorder, due to the presence of a supernumerary chromosome 18. Infants with trisomy 18 have a high mortality rate, secondary to the lethal malformations associated with this syndrome. The prevalence of trisomy 18 is variable and survival is low, with only one in 10 newborns reaching the first year of life. The syndrome can be evoked antenatally in case of presence of abnormalities on obstetrical ultrasound and confirmed by cytogenetic study. We report the case of a 33-year-old parturient, 25 weeks of amenorrhea pregnant, in whom fetal Edwards syndrome was suspected and confirmed by cytogenetic study at birth.