INTRODUCTION: TSH-secreting pituitary adenomas are rare pituitary functioning tumors accounting for less than 2% of the pituitary adenomas. The clinical feature consists of thyrotoxicosis occasionally associated to tumoral symptoms due to mass effect. The biochemical feature consists of elevated thyroid hormones levels and normal or high TSH concentrations. This disease is often wrongly diagnosed as Grave’s disease, and the ablative therapy is frequently conducted prior to the diagnosis. OBJECTIVE: To report two cases followed in the Neuroendocrine Unit of Hospital […]