First Trimester Diagnosis of Holoprosencephaly Secondary to a Ring Chromosome 7
Figure 1
Ultrasound images at 12 3/7 weeks gestation. (a) Transverse view of the fetal intracranial anatomy demonstrates a single anterior ventricle and fused thalami; (b) sagittal view of the fetal profile demonstrates an increased nuchal translucency (NT) of 2.9 mm and a flattened profile with absent nasal bone.
