Osteoid osteoma.
D000293:Adolescent; D001847:Bone Diseases / Q000175:diagnosis; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010017:Osteoma, Osteoid / Q000175:diagnosis / Q000000981:diagnostic imaging*; D011859:Radiography