Fourteen fetuses had an abnormal karyotype including 11 (2.4%) with trisomy 21. Ultrasound markers were found in 9/11 (81.8%) fetuses with trisomy 21, compared with 44/449 (9.8%) with a normal ...

The presence of mild ventriculomegaly should prompt a detailed ultrasound evaluation to define ... are common postnatal findings associated with trisomy 21. Antenatally, these findings are rarely ...

Down syndrome, also known as trisomy 21, is a genetic condition caused by ... and the combination of ultrasound and serum screening techniques. One significant advancement in prenatal screening ...

Down syndrome, or trisomy 21, is a genetic disorder where babies ... An NT scan is a routine ultrasound. You need to have a full bladder, so the ultrasound technician will ask you to drink 2 ...