Blomstrand lethal chondrodysplasia (BLC) is a neonatal osteosclerotic dysplasia (see this term) characterized by advanced endochondral bone maturation, very short limbs, dwarfism and prenatal lethality. The disease is Blomstrand lethal chondrodysplasia (Orphanet_50945). Also known as: BLC, BOCD, Blomstrand chondrodysplasia, Blomstrand osteochondrodysplasia, Chondrodysplasia, Blomstrand type.