title: Intracortical osteosarcoma; two-year delay in diagnosis.
abstract: Intracortical osteosarcoma is the rarest type of osteosarcoma. In most instances the tumor arises in the cortex of the femur, less commonly, in the tibia. We describe an 11-year-old patient with intracortical osteosarcoma of the tibia in whom the tumor was present for 2 years and became painful 3 months prior to presentation.
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D002648:Child; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012516:Osteosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D013977:Tibia / Q000473:pathology*; D013997:Time Factors; D014057:Tomography, X-Ray Computed