Similar pathologic findings have been described in the amniotic band syndrome 2 . Only two of our cases were due to amniotic bands. The differential diagnosis includes anencephaly and large cephaloceles. In these skeletal dysplasias, the intracranial anatomy is normal, and the brain is surrounded by a thick layer of tissue representing soft tissues and unossified bone. Bowing, fractures or shortening of long bones are usually present.
Antenatal identification allows the clinician to make appropriate and timely management decisions.
2.Romero R, Pilu G, Jeanty J, et al. Prenatal Diagnosis of Congenital Anomalies. The Developing Human, 3rd ed.