Synovial sarcoma of the hindfoot

Case contributed by Dr Roberto Schubert

Presentation

Swelling and moderate pain of the right hindfoot, that had evolved over a period of 4 months.

Patient Data

Age: 50
Gender: Female

Large hypervascular masses around the deep flexor tendons at the medial and the peroneal tendons at the lateral aspect of the hindfoot. Large T1-hypointense bone lesion of the calcaneus, also with patchy enhancement. No apparent fluid collections.

The calcaneus shows destructions of its cortical borders, mainly at the medial aspect. There are more circumscript, ill-defined osteolytic lesions and a more permeative pattern of bone infiltration. Note the tumour calcifications of the medial synovial mass.

Case Discussion

Excisional biopsy was done and revealed a poorly differentiated synovial sarcoma pT2b, G3. Crural amputation was subsequently performed. Osseous invasion by synovial sacomas of this extent is rarely reported.

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Case information

rID: 20087
Case created: 2nd Nov 2012
Last edited: 10th Oct 2015
Inclusion in quiz mode: Included

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