[Misdiagnosis of mosaic tetrasomy 9p in a fetus by single nucleotide polymorphism-based array].

OBJECTIVE To explore the reason for discordant results of karyotyping and microarray analysis in a fetus with mosaic tetrasomy 9p. METHODS Amniocentesis was carried out for a pregnant woman with advanced age for whom ultrasound scan has indicated fetal ventricular expansion, intrauterine growth retardation and persistent upper venous cavity. G-banded… CONTINUE READING