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A 51-year-old female with synovial sarcoma. (A–D) Magnetic resonance imaging revealing a well-defined, lobulated soft-tissue mass near the right knee. A slightly high-intensity signal relative to muscle is present on T1-weighted imaging (T1WI) and T2WI. High- and low-intensity signals are also present. Contrast-enhanced scan reveals heterogeneous enhancement, with no clear enhancement observed in areas of necrosis or internal septation.
