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.
Distance between nasal base and midline upper lip vermilion border more than 2 SD above the mean. Alternatively, an apparently increased distance between nasal base and midline upper lip vermilion border.
