3D and 4D sonographic imaging of amniotic band syndrome in early pregnancy.

We present a case of amniotic band syndrome diagnosed with two-dimensional (2D), three-dimensional (3D), and four-dimensional (4D) sonography at 14 weeks and 5 days of gestation. Conventional 2D sonography revealed multiple amniotic bands, fetal acrania, deformed hand, gastroschisis, kyphoscoliosis, and club foot. 3D and 4D sonography revealed multiple amniotic bands swinging in the amniotic cavity with 1 of them attached to the fetal head, and the severe deformity of the fetal face.