title: FDG PET/CT appearance of tumor thrombus of ovarian vessels masquerading as retroperitoneal fibrosis.
abstract: A 23-year-old woman with recurrent uterine endometrial stromal sarcoma underwent FDG PET/CT, which showed pelvic recurrence and multiple pulmonary metastases. In addition, increased activity in a vertical soft tissue mass along the left ureter was noted, which appears similar to retroperitoneal fibrosis on PET/CT images. However, pathological examination demonstrated that the elevated FDG activity in this mass was a result of tumor thrombus from endometrial stromal sarcoma in the left ovarian arteries and veins.
authors.affiliation: From the Departments of *Nuclear Medicine, and †Pathology, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, People's Republic of China.
authors.forename: Yaping
authors.initials: Y
authors.lastname: Luo
authors.forename: Ruie
authors.initials: R
authors.lastname: Feng
authors.forename: Fang
authors.initials: F
authors.lastname: Li
mesh_terms: D000328:Adult; D003951:Diagnostic Errors; D016889:Endometrial Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D064847:Multimodal Imaging; D010053:Ovary / Q000098:blood supply / Q000473:pathology; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D012185:Retroperitoneal Fibrosis / Q000000981:diagnostic imaging*; D018203:Sarcoma, Endometrial Stromal / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D020246:Venous Thrombosis / Q000000981:diagnostic imaging*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18