Camurati-Engelmann disease (CED), or progressive diaphyseal dysplasia, is a rare sclerosing dysplasia of which 250 cases have been described in the English literature. The disease affects one in a million people and is autosomal dominant with variable penetrance. It was initially described by Cockayne in 1920; Camurati was the first to suggest its hereditary nature in 1922. A single case of muscular wasting and marked bone involvement was reported by Engelmann in 1929. As the name suggests, there is progressive hyperostosis and predominant involvement of the diaphyses.