Obstetrics Absent nasal bone 2 Jan 201830 Nov 2020 The ultrasound specialist should be aware that there is a high association between absent nasal bone at 11–13+6 weeks and trisomy 21, as well as other chromosomal abnormalities. The nasal bone…
Obstetrics Nuchal translucency 3 Nov 201730 Nov 2020 The nuchal translucency (NT) measurement is an integral part of the first-trimester screening for fetal anomalies. The following prerequisites are important for a proper measurement: Operator with specialized training and…
Obstetrics The lambda sign 4 Oct 201730 Nov 2020 In twin pregnancies prenatal diagnosis of chorionicity is important because chorionicity rather than zygocity is the main factor determining pregnancy outcome. An important feature of dichorionicity is the extension of…
