Synovial sarcoma.
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007866:Leg; D013584:Sarcoma, Synovial / Q000175:diagnosis; D012983:Soft Tissue Neoplasms / Q000175:diagnosis; D013641:Tarsal Tunnel Syndrome / Q000175:diagnosis