To recognize the typical imaging findings of synovial sarcomas with emphasis on the upper limbs.
Synovial sarcomas (SS) are tumors of mesenchymal and epithelial origin and is the fourth most common type of soft-tissue sarcoma,
accounting for 8%–10.5% of all primary soft-tissue sarcomas.
SS occur in any age,
but mostly in adolescents and young adults (15–40 years of age).
They are the most common sarcoma subtype in the adolescent population. Despite its name,
is not related to synovial tissue and does not commonly arise in an intraarticular location,
but usually occurs near joints.
Findings and procedure details
· Radiograph Radiopgraph is usually the first imaging exam performed when patients seek medical attention.
They are normal in about 50% of cases,
particularly when lesions arel small.
Plain radiograph usually show a non-specific round to oval soft-tissue lesion,
usually close to articulations.
Calcification are identified in up to 30%,
and are often eccentric or peripheral within the mass.
Chondroid or osteoid mineralization is rare.
Bone involvement is not rare,
but as SS growth is usyally...
Synovial sarcomas are rare and aggressive tumors.
It should always be considered in the differential diagnosis of young adults presenting with a periarticular mass,
particularly if it contains calcifications. Although less common in the upper limbs,
as we showed here,
SS are a relevant differential diagnosis of lesions in these sites and its features should to be known by the radiologist. The diagnosis of synovial sarcoma should also be considered when small periarticular masses are found and...
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Synovial sarcoma: imaging features of common and uncommon primary sites,
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Synovial sarcomas usually metastasize after >5 years: a multicenter retrospective...