Presentation
Routine antenatal ultrasound scan at 17 weeks of gestational age.
Patient Data
Age: 20 years
Gender: Female
From the case:
Anencephaly
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A single intrauterine fetus at 17 weeks of gestation by AC and FL, with an absence of brain tissue and bony calvarium and a "Frog eye" appearance upon coronal section of the face.
3D images showing absence of the cranial vault.
Case Discussion
Anencephaly is the most severe form of cranial neural tube defect (NTD) and is characterised by the absence of cortical tissue (although brainstem and cerebellum may be variably present) as well as absence of the cranial vault.