<unk>  (from Greek: πυκνός (puknos) meaning "dense", dys ("defective"), and ostosis ("condition of the bone")), is a lysosomal storage disease of the bone caused by a mutation in the gene that codes the enzyme cathepsin K. It is also known as<unk> , PKND, and PYCD.
Pycnodysostosis
Cleidocranial dysostosis
Acrodysostosis
Dysostosis
Melorheostosis
Cemento-osseous dysplasia
Gerodermia osteodysplastica
Metaphyseal dysplasia