title: A thyroid metastasis revealing an occult renal clear-cell carcinoma.
abstract: A case of renal clear-cell carcinoma presenting as a nodular thyroid metastasis is reported. The possibility of a metastatic lesion from the kidney should be taken into account in each case of clear-cell thyroid lesion. Fine needle aspiration cytology may be unable to discriminate between the renal or thyroid origin of such lesions unless PAS staining is performed.
mesh_terms: D010131:Aminosalicylic Acid; D001391:Azo Compounds; D001707:Biopsy, Needle; D002292:Carcinoma, Renal Cell / Q000473:pathology / Q000556:secondary*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary / Q000175:diagnosis* / Q000473:pathology; D013964:Thyroid Neoplasms / Q000473:pathology / Q000556:secondary*; D014463:Ultrasonography
chemical_list: D001391:Azo Compounds; D010131:Aminosalicylic Acid; C011049:oil red O