A revisit of MRI analysis for synovial sarcoma

We evaluated magnetic resonance imaging (MRI) findings of synovial sarcomas in 22 patients, and the most common MRI findings were oval and well-define d nodular masses with heterogeneous intermediate signal intensity (SI) on T 1 weighted images (WI), high SI on T2-WI and heterogeneous contrast enhance ment. A cystic component was seen in 77%, intratumoral hemorrhage in 73%, a nd calcification in three monophasic sarcomas. Metastases were noted in lun g (mostly biphasic type), lymph node, and bone. Posttreatment changes revea led diffusely increased SI on T2-WI and slightly diffuse contrast enhanceme nt with feathery appearance. Morphology and MR signal characteristics assis t in synovial sarcoma management. (C) 2001 Elsevier Science Inc. All rights reserved.