Increased density of the femur in a young adult.
D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D005269:Femur / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D012516:Osteosarcoma / Q000000981:diagnostic imaging*; D011859:Radiography