title: An unusual case of synovial sarcoma.
mesh_terms: D000368:Aged; D003168:Complement Fixation Tests; D003937:Diagnosis, Differential; D004443:Echinococcosis / Q000175:diagnosis; D006801:Humans; D007964:Leukocytosis; D008297:Male; D013584:Sarcoma, Synovial / Q000175:diagnosis* / Q000473:pathology