Prenatal dıagnosıs of a fetus wıth trısomy 9 mosaıcısm: Ultrasonographıc and cytogenetıc fındıngs

We present a fetus with multiple ultrasonographic abnormalities in which prenatal diagnosis revealed trisomy 9 mosaicism in the fetal blood and complete trisomy 9 in the amniotic fluid and chorionic villi. Ultrasonographic abnormalities included micrognathia, overlapping fingers, horseshoe kidneys located at pelvis showing mild pelvicalyectasia, hypoplastic left ventricle with an echogenic foci, ventricular septal defect, pulmonary artery stenosis, diffuse perihepatic calcifications and single umbilical artery. Key Words: Trisomy 9 Mosaicism, Prenatal diagnosis, Ultrasonography