A case report on the antenatal three dimensional sonographic features of thanatophoric dysplasia.

Thanatophoric dysplasia (TD) is a well-known fatal skeletal dysplasia in fetal life. It can be usually diagnosed by two-dimensional (2D) ultrasonography. However three-dimensional (3D) ultrasonography, a new rapidly available technique, can be a useful addition to 2D ultrasonography for improving the visualization of the abnormalities and giving help when providing counseling to a family regarding the diagnosis and future recurrences. Here, the authors present the first experience in Songklanagarind Hospital in applying 3D ultrasonography in the diagnosis of fetal thanatophoric dysplasia.