Image IQ: A Fetal Head Abnormality
What's your diagnosis based on these images of the fetal head?
(Images courtesy of Firoz Bhuvar, MD)
These images show a large anterior cranial defect allowing for herniation of the fetal brain. Large encephaloceles such as this are incompatible with postnatal survival. Frontoethmoidal encephaloceles are extremely rare and have an estimated incidence of 15% of all encephaloceles.