Presentation
Combined first trimester screening.
Patient Data
Age: 36 years
Gender: Female
From the case:
Nuchal translucency
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CRL is 56 mm. Nuchal translucency is 2.1 mm.
The expected nuchal translucency (NT) is 1.54 mm (50th percentile) - the measured NT value is 84th percentile for this CRL.
Case Discussion
Increased nuchal translucency (>95th percentile) is indicative of abnormal chromosomes (e.g. aneuploidy) and in the absence of this, it is still associated with increased risk of structural abnormality (e.g. major cardiac defects).
A more accurate risk assessment can be obtained when this measurement is combined with serum markers and maternal age.