Anaplastic carcinoma of the thyroid complicating severe thyrotoxicosis.
D002277:Carcinoma / Q000209:etiology*; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D013964:Thyroid Neoplasms / Q000209:etiology*