Organ System Pathology USMLE Step 1 Practice Question
A 52 year old man comes to the office because his wedding ring and shoes no longer fit. He also reports headaches, increased sweating, and hand numbness at night. Examination shows prognathism, frontal bossing, and enlarged hands. Which of the following is the best initial laboratory test to confirm the suspected diagnosis?
Answer choices
- AUrinary catecholamine metabolites
- BRandom growth hormone level
- CSerum prolactin level
- DLow dose dexamethasone suppression test
- ESerum insulin like growth factor 1 levelCorrect answer
- FSerum cortisol level with overnight dexamethasone suppression
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