title: An unusual presentation of telangiectatic osteosarcoma.
abstract: Telangiectatic osteosarcoma (TOS) is a rare subtype of osteosarcoma that accounts for approximately 2% of all osteosarcomas. Presented is a case of a sacral mass that was originally thought to be a chordoma and was treated surgically but on pathologic examination was diagnosed as a TOS. A review of the literature on other sacral lesions is provided. The intention for presenting this case is twofold: to make physicians aware of the differential diagnoses of sacral lesions and to report an unusual presentation of this rare tumor.
authors.affiliation: Philadelphia College of Osteopathic Medicine, Pennsylvania, USA.
authors.forename: R G
authors.initials: RG
authors.lastname: Simon
authors.forename: R B
authors.initials: RB
authors.lastname: Irwin
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012516:Osteosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012447:Sacrum; D013684:Telangiectasis