HomeCasesSynovial sarcoma with lung metastases
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XRMusculoskeletalConfirmedFRCR 2B

Synovial sarcoma with lung metastases

120 views520y Male10/9/2026

A 20-year-old male presents with insidious, progressive bone pain waking them from sleep, accompanied by localized palpable swelling and constitutional symptoms.

  • 1Soft tissuemasswithin medial suprapatellar pouch with foci of calcification (best seen on lateral)
  • 2MRI confirms amassin the medial suprapatellar pouch
  • 3It has a heterogenous signal pre-contrast and enhances heterogeneously post-gadolinium
  • 4Complete 'white-out' of the left chest with marked mediastinal deviation to the right
  • 5Multiple masses in the right lower lobe, better seen on the lateral
  • 6From the CXR, it was unclear if the left chest opacity is due to effusion or masses
  • 7CT shows huge soft tissue mass occupying the whole of the left chest, causing impressive contra-lateral displacement of the heart
  • 8Thick lobulated peripheralpleural thickening, pulmonarymetastasesand pulmonaryatelectasisaccount for the opacity.No significant effusion on this non-contrast scan.Multiple metastases in the right lung.