Prenatal detection of chromosomal abberations: A case report of Trisomy 9

Introduction: Trisomy 9 is a rare chromosomal abnormality. It combines multiple defects giving a poor prognosis. The therapeutic pregancy interruption is always an option. Case study: We reported a case of a 35- year -patient who had no pathological history and non-consanguineous marriage. She had two children in good health. During this pregnancy, the first trimester ultrasound and measurement of nuchal translucency were not performed. A cystic hygroma was discovered at 18 WG associated to a complex cardiac defect and a left diaphragmatic hernia, without other Ultrasound signs. Amniocentesis showed Trisomy 9. A…