Friedrich's disease.
D000293:Adolescent; D002114:Calcinosis / Q000000981:diagnostic imaging; D002968:Clavicle / Q000000981:diagnostic imaging* / Q000293:injuries / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009207:Myoclonus / Q000000981:diagnostic imaging* / Q000473:pathology; D009336:Necrosis; D011859:Radiography