title: Extraosseous Osteosarcoma of the Liver Demonstrated on 18F-FDG PET/CT Imaging.
abstract: A 66-year-old woman presented with abdominal pain for 1 month. Ultrasonography displayed multiple hepatic masses that were thought as metastases. FDG PET/CT was performed to assess the nature of these masses and to search primary malignancy. The images showed elevated FDG activity in the partially calcified hypodense lesions in the liver without abnormality elsewhere. The lesions were subsequently confirmed as primary extraosseous osteosarcoma in the liver. The patient received liver transplantation. Six months later, her CA-125 was significantly increased. The follow-up PET/CT scan demonstrated the widespread metastases.
authors.affiliation: From the *Department of Nuclear Medicine, Zhongshan Hospital, Fudan University; †Nuclear Medicine Institute of Fudan University; ‡Shanghai Institute of Medical Imaging; and Departments of §Pathology and ∥Radiology, Zhongshan Hospital, Fudan University, Shanghai, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
authors.forename: Lijuan
authors.initials: L
authors.lastname: Luan
authors.forename: Hong
authors.initials: H
authors.lastname: Yun
authors.forename: Yingyong
authors.initials: Y
authors.lastname: Hou
authors.forename: Hongcheng
authors.initials: H
authors.lastname: Shi
mesh_terms: D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008875:Middle Aged; D012516:Osteosarcoma / Q000000981:diagnostic imaging* / Q000473:pathology; D000072078:Positron Emission Tomography Computed Tomography; D019275:Radiopharmaceuticals
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18