Physiology A patient has a goiter associated with high plasma levels of both TRH and TSH. Her hea rate is elevated. This patient most likely has which condition? A An endemic goiter B A hypothalamic tumor secreting large amounts of TRH C A pituitary tumor secreting large amounts of TSH D Graves' disease 💡 Explanation A patient has a goiter associated with high plasma levels of both TRH and TSH. Her hea rate is elevated. This patient most likely has which condition? ✓ Correct Answer: B. A hypothalamic tumor secreting large amounts of TRH