Jul 20 • Clinical question
Fq112.
A 55-year-old man presents to his General Practitioner with a 4-month history of tiredness. On examination, he is noted to have breast enlargement (gynaecomastia).
Blood tests show:
- TSH: 0.2 mIU/L (reference range: 0.4–4.3 mIU/L)
- Free T4: 6 pmol/L (reference range: 9–23 pmol/L)
What is the most likely diagnosis?
A. Primary hyperthyroidism
B. Primary hypothyroidism
C. Secondary hyperthyroidism
D. Secondary hypothyroidism.
E. Sick euthyroid syndrome
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Fq112.
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