Antenatal ultrasound at 12-14 weeks. Previous first trimester scan was normal.
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Nuchal translucency is markedly increased due to a cystic lesion in neck extending bilaterally from midline. Some internal septations are also seen within lesion.
While raised nuchal translucency may be due myriad reasons. This particular case appears to have cystic hygroma with septations. Strong association with chromosomal anomalies specifically Turner's syndrome suggested.
Karyotyping may be advised in such cases.