[Thanatophoric dwarfism - prenatal diagnosis of a fatal form of osteochondrodysplasia using ultrasound].

The report presents the ultrasonographic diagnosis of thanatophoric dwarfism in the 33rd week of pregnancy. This congenital osteochondrodysplasia is characterized by a relatively large head, a narrow thorax, a protuberant abdomen and micromelic limbs, and hydramnios is often present. The early diagnosis of this lethal malformation allows the obstetrician to decide on the appropriate way of delivery.