Diagnosis & Imaging
Nuchal translucency
Nuchal translucency is a measurement taken on early ultrasound that is part of first-trimester screening.
In short: Nuchal translucency
- It is measured in the late first trimester.
- It is part of broader prenatal screening.
- It is one of several early assessments.
- Abnormal findings may prompt further evaluation.
What it is
It is a measurement of the fluid at the back of the baby's neck, taken on ultrasound in the late first trimester (around 11–14 weeks). It is part of first-trimester screening for certain conditions.
Understanding Nuchal translucency
It is one component of broader early prenatal screening, often combined with blood tests, and an increased measurement can prompt further evaluation. While it is not specific to encephalocele, the late first-trimester ultrasound that includes it is also a time when an encephalocele may be noticed, which can lead to more detailed imaging.
Why it matters
Understanding nuchal translucency helps families see what early screening measures and how the late first-trimester ultrasound fits into the timeline of prenatal assessment.
Common questions
What is nuchal translucency?
A measurement of fluid at the back of the baby's neck.
When is it measured?
In the late first trimester.
Is it specific to encephalocele?
No — it is part of broader screening.
Bottom line
Nuchal translucency is an early ultrasound measurement that is part of first-trimester screening.
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