title: Metastatic follicular carcinoma of the thyroid to the skin: a case confirmed by immunohistochemistry.
abstract: A 78-year-old woman with a history of follicular carcinoma of the thyroid developed a painless nodule on her face. A skin biopsy showed a dermal tumor composed of cells with granular, eosinophilic cytoplasm. Immunoperoxidase staining demonstrated thyroglobulin in the tumor cells, confirming the diagnosis of metastatic thyroid carcinoma.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000556:secondary*; D000368:Aged; D001706:Biopsy; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology / Q000556:secondary*; D013954:Thyroglobulin / Q000032:analysis; D013964:Thyroid Neoplasms / Q000473:pathology*
chemical_list: D013954:Thyroglobulin