A 30-year-old man visits his physician for an annual health check.He complains that he has been feeling fatigued of late and has lost weight.Blood is collected and the following laboratory results are noted: total T₃,elevated; total T₄,elevated; free T₄,elevated; TSH,slightly elevated.Magnetic resonance imaging indicates a mass in the area of his pituitary gland.What disorder do the results suggest?

Question

Quizplus · Accepted Answer

Central hyperthyroidism is a condition in which the pituitary gland produces too much TSH, which in turn stimulates the thyroid gland to produce too much thyroid hormone. This can lead to symptoms of hyperthyroidism, such as fatigue, weight loss, and elevated thyroid hormone levels. The MRI finding of a mass in the area of the pituitary gland is also consistent with a TSH-secreting pituitary tumor, which is a common cause of central hyperthyroidism.

A 30-Year-Old Man Visits His Physician for an Annual Health