title: Case report 812: Well-differentiated osteosarcoma arising in the right third rib.
abstract: A rare case of intraosseous well-differentiated osteosarcoma in a 9-year-old boy arising in the rib is reported. A bone scintiscan was found to be useful in accurately diagnosing this lesion as malignant tumor, because plain films and CT scan seemed to indicate a benign tumorous condition.
authors.affiliation: Department of Orthopaedic Surgery, National Kyushu Cancer Center, Fukuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Tokito
authors.forename: M
authors.initials: M
authors.lastname: Ushijima
authors.forename: N
authors.initials: N
authors.lastname: Hara
authors.forename: Y
authors.initials: Y
authors.lastname: Oda
authors.forename: M
authors.initials: M
authors.lastname: Tsuneyoshi
mesh_terms: D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D012516:Osteosarcoma / Q000473:pathology*; D012272:Ribs / Q000473:pathology*; D013899:Thoracic Neoplasms / Q000473:pathology*