label: spondylometaphyseal dysplasia, Sedaghatian type
label_lc: spondylometaphyseal dysplasia, sedaghatian type
description: Spondylometaphyseal dysplasia (SEMD), Sedaghatian type is a neonatal lethal form of spondylometaphyseal dysplasia characterized by severe metaphyseal chondrodysplasia, mild rhizomelic shortness of the upper limbs, and mild platyspondyly.