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An 35-year-old woman has had insomnia for the past 4 months. She has also had episodes of diarrhea with up to 4 loose stools per day. On physical examination, she exhibits bilateral proptosis. Her outstretched hands demonstrate a fine tremor. On palpation of her neck, the thyroid gland does not appear to be enlarged and no masses are palpable. Laboratory studies show a serum TSH of 8.8 microU/mL in association with a serum free thyroxine of 5.1 ng/dL. Which of the following is the most likely diagnosis?
A Graves disease
B Pituitary adenoma
C Chronic thyroiditis
D Prior thyroidectomy
E Nodular goiter

I guess it is BBB

A.

it is B

A Graves disease

sorry ..its A

hhcc please explain the reason for Increased TSH.......i thought it is decreased secondary to negative feedback.....

Thanx

A Graves disease

B) CORRECT. This combination of tests suggests that there is TSH coming from the pituitary, but there is no feedback inhibition. This suggests a pituitary adenoma is present. Such a TSH secreting pituitary adenoma is quite uncommon

I agree with B. If A then TSH should be low