title: Extraskeletal osteosarcoma: extensive tumor thrombus on fused PET-CT images.
abstract: A 30-year-old woman developed extraskeletal osteosarcoma in the right buttock and thigh. Radiographs and unenhanced computed tomography (CT) showed a large, multilobulated mass accompanied by mineralized matrix. Contrast-enhanced CT and magnetic resonance (MR) images showed extensive tumor thrombus in the right internal- and external iliac veins. Co-registered positron emission tomography (PET) and CT images showed abnormal F-18 2-fluoro-2-deoxy-D-glucose (FDG) uptake in the tumor thrombus. PET study in our patient provided information concerning disease extent and viability of tumor thrombus.
authors.affiliation: Division of Diagnostic Radiology and Nuclear Medicine, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
authors.forename: Ukihide
authors.initials: U
authors.lastname: Tateishi
authors.forename: Umio
authors.initials: U
authors.lastname: Yamaguchi
authors.forename: Takashi
authors.initials: T
authors.lastname: Terauchi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Maeda
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Moriyama
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Arai
authors.forename: Tadashi
authors.initials: T
authors.lastname: Hasegawa
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D012516:Osteosarcoma / Q000150:complications / Q000175:diagnosis*; D049268:Positron-Emission Tomography / Q000379:methods*; D012983:Soft Tissue Neoplasms / Q000150:complications / Q000175:diagnosis*; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*; D020246:Venous Thrombosis / Q000175:diagnosis* / Q000209:etiology