Cutaneous manifestations of osteoectasia.
D000052:Acanthosis Nigricans / Q000209:etiology*; D000293:Adolescent; D006801:Humans; D006958:Hyperostosis, Cortical, Congenital / Q000150:complications*; D008297:Male; D011561:Pseudoxanthoma Elasticum / Q000209:etiology*