[Thanatoforic dysplasia--case report].

The case report presents a prenatal diagnosis of a fetus with thanatophoric dysplasia. Characteristic features in this syndrome are: extremely short limbs with curved thigh bones, narrow chest, enlarged abdomen, prominent forehead, dysmorphic face, macrocephaly polihydramnion. The malformation results from the mutation in fibroblast growth factor receptor gene (FGFR-3) which is located in chromosome 4. TD is considered to be an autosomal dominant but most cases are caused by new mutations in the FGFR-3 gene. The prognosis in this malformation is extremely poor. The article presents ultrasound and additional investigations which might be useful in differential diagnosis.