Hôpital Félix Guyon, Topazes street, 97400 Saint-Denis, Reunion Island, France. Ph : 0262 90 55 22. Fax : 0262 90 77 30.

This is a 29 week old fetus with a lumbo-sacral spina bifida aperta with hydrocephalus and Arnold-Chiari deformation.

Coronal section of the brain near the atrium.

Sonogram demonstrating parasagittal section of the brain at 29 weeks of gestation, with ventriculomegaly.

Sonogram demonstrating transversal section of the brain at 29 weeks of gestation, with bilateral hydrocephaly.

Sonogram demonstrating parasagittal section of the brain at 29 weeks of gestation, with ventriculomegaly.

Transverse view of sacrum with myelomeningocele posterior to the lower spine at 29 weeks of gestation.

Coronal scan demonstrating a cystic lesion arising from the sacro-lombaire, without the integrity of the sacrum.

Three-dimensional ultrasound in a fetus at 29 weeks of gestation showing myelomeningocele (coronal section).

Three-dimensional ulttrasound imaging at 29 weeks of gestation: coronal view showing vertebral bodies and spinal defect.