title: Anaplastic transformation of metastatic follicular carcinoma of the thyroid.
abstract: This is a case report of a patient believed to be the first reported case of pulmonary metastases from follicular carcinoma of the thyroid undergoing transformation to anaplastic carcinoma proven by serial biopsies.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D002277:Carcinoma / Q000556:secondary*; D005134:Eye Neoplasms / Q000532:radiotherapy / Q000556:secondary; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D012160:Retina / Q000473:pathology; D013964:Thyroid Neoplasms / Q000473:pathology* / Q000601:surgery; D013965:Thyroidectomy