<unk>  is estimated to occur in 1 in 50,000 people.
Hereditary multiple exostoses
Inherited patterned lentiginosis
Diffuse idiopathic skeletal hyperostosis
Pycnodysostosis
Familial myxovascular fibromas
Nevoid basal-cell carcinoma syndrome
Gerodermia osteodysplastica
Acrofrontofacionasal dysostosis