title: Pulmonary artery sarcoma detected on F-18 FDG PET/CT as origin of multiple spinal metastases.
abstract: A 67-year-old man with back pain was diagnosed as having multiple spinal metastases on MRI. On CT scan, only a filling defect in the right pulmonary artery was observed and suspected as venous thromboembolism. On F-18 fluorodeoxyglucose (FDG) PET/CT, intense hypermetabolism was observed in the right pulmonary artery in addition to the metastatic spine lesions. Biopsy confirmed the lesion as a primary pulmonary artery sarcoma (PAS), and the spine lesions as metastases of PAS. Although PAS is rare and its bone metastasis presenting initial symptom is extremely rare, FDG PET/CT is an effective diagnostic modality for PAS, not only in discrimination from venous thromboembolism, but also in workup of metastatic origin.
authors.affiliation: Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea.
authors.forename: In Kook
authors.initials: IK
authors.lastname: Chun
authors.forename: Jae Seon
authors.initials: JS
authors.lastname: Eo
authors.forename: Jin Chul
authors.initials: JC
authors.lastname: Paeng
authors.forename: Dong Wan
authors.initials: DW
authors.lastname: Kim
authors.forename: June-Key
authors.initials: JK
authors.lastname: Chung
authors.forename: Dong Soo
authors.initials: DS
authors.lastname: Lee
mesh_terms: D000368:Aged; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography; D011651:Pulmonary Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D012509:Sarcoma / Q000000981:diagnostic imaging / Q000473:pathology*; D013125:Spinal Neoplasms / Q000556:secondary*; D014057:Tomography, X-Ray Computed; D019043:Vascular Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*
chemical_list: D019788:Fluorodeoxyglucose F18