densely cellular spindle cell neoplasm
Mitotic rate is brisk and there is focal necrosis (overall around 20% necrosis).
The morphology of the tumor is consistent with a synovial sarcoma.
Abnormal karyotype with the presence of a X;18 translocation and a 5;10 translocation.
The t(X;18) is commonly associated with synovial sarcoma
US image: Case Photo #1
MRI image Case Photo #2
MRI image Case Photo #3
Pediatric Orthopedic Surgery
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