[Synovial sarcoma mistaken for metastasis of follicular thyroid carcinoma: a cautionary tale].
D000230:Adenocarcinoma / Q000175:diagnosis* / Q000556:secondary; D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D007719:Knee Joint; D008297:Male; D013584:Sarcoma, Synovial / Q000175:diagnosis*; D013964:Thyroid Neoplasms / Q000175:diagnosis*