Thyroid metastasis of bladder urothelial carcinoma: A very rare case

Metastatic disease to the thyroid is a very uncommon situation. The cancers that usually metastasize to the thyroid include the breast, lung, colon and kidney. To our knowledge, metastasis from the bladder to the thyroid is exceedingly rare. Here, we report a case of a unique metastatic transitional cell carcinoma to the thyroid gland three years after total cystectomy.