title: Anatomy and radiology of a bone island.
abstract: Anatomoradiological study, on an amputation specimen for osteosarcoma from a 13 year old girl, of a bone island in the distal femoral epiphysis. It consists of a mature bone core caused by localized remodeling of the spongeous trabeculae, old but still slightly active, clearly different from a bone infarct, a tumoral or infectious process. Discussed the interest of a precise radiological study for making the diagnosis (particularly xerography), the risks of error involved in scintigraphy and the utility of a block excision if a biopsy is performed.
mesh_terms: D000293:Adolescent; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D004838:Epiphyses / Q000473:pathology; D005260:Female; D005269:Femur; D006801:Humans; D009999:Ossification, Heterotopic / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D014986:Xeroradiography