title: Osteoid osteoma: an unusual presentation.
abstract: An osteoid osteoma developed in the fracture callus four years after an open reduction and internal fixation of a femur of a 21-year-old man. The treatment consisted of en bloc excision of the lesion using intraoperative roentgenographic studies for localization of the lesion.
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D005264:Femoral Fractures / Q000150:complications* / Q000601:surgery; D005500:Follow-Up Studies; D005592:Fracture Fixation; D006801:Humans; D008297:Male; D010017:Osteoma, Osteoid / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography; D014054:Tomography