Thanatophoric dysplasia (TD) is the most common form of lethal neonatal dwarfism with micromelic shortening of the limbs, macrocephaly, platyspondyly, and reduced thoracic cavity.

摘性畸胎是最常见的性新生儿儒症其特点为短小的四肢、小胸、巨部发育异常等。