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  • Title: TSH secreting pituitary adenoma.
    Author: Jha S, Kumar S.
    Journal: J Assoc Physicians India; 2009 Jul; 57():537-9. PubMed ID: 20329419.
    Abstract:
    Thyrotropin (TSH) secreting pituitary adenomas are a very rare cause of hyperthyroidism. They typically present with signs and symptoms of hyperthyroidism and rarely can be asymptomatic. TSH secreting tumors account for 1 percent of all pituitary adenoma. They are a rare cause of thyrotoxicosis in which adenomas completely or partially lose feedback regulation of thyroid hormones and lead to sustained stimulation of thyroid gland. The most definitive treatment of thyrotropin (TSH)-secreting pituitary adenomas is transsphenoidal removal of tumor after restoring euthyroidism. We report a case of pituitary adenoma associated with elevated serum free thyroid hormones and non-suppressed TSH levels.
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