title: Magnetic resonance appearance of intra-articular synovial sarcoma: case reports and review of the literature.
abstract: Intra-articular synovial sarcoma is extremely rare. The authors report the magnetic resonance appearance of 2 cases of intra-articular synovial sarcoma and review the current medical literature on this subject. Intra-articular synovial sarcoma must be considered in the differential diagnosis of a heterogeneously enhancing multiloculated intra-articular mass, especially in the knee joint, that does not have the typical radiological features of either synovial osteochondromatosis, pigmented villonodular synovitis, or synovial hemangiomas.
authors.affiliation: Department of Radiology, Brooke Army Medical Center/San Antonio Uniformed Services Health Education Consortium, Fort Sam Houston, TX, USA. liem.mansfield@gmail.com
authors.forename: Liem T
authors.initials: LT
authors.lastname: Bui-Mansfield
authors.forename: Seth D
authors.initials: SD
authors.lastname: O'Brien
mesh_terms: D000293:Adolescent; D000328:Adult; D018771:Arthralgia / Q000209:etiology; D001706:Biopsy / Q000379:methods; D002648:Child; D003287:Contrast Media / Q000008:administration & dosage; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007592:Joint Diseases / Q000175:diagnosis*; D007596:Joints / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D035583:Rare Diseases; D013584:Sarcoma, Synovial / Q000175:diagnosis*
chemical_list: D003287:Contrast Media