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USMLE · Question #420
USMLE Question #420: Real Exam Question with Answer & Explanation
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Question
A 75-year-old man presents to his physician with complaints of nocturia, urinary urgency, and a feeling that he could not completely empty his bladder. A digital rectal exam reveals a firm, enlarged prostate. A bone scan is ordered and shows positivity in multiple vertebral bodies. Elevation of which of the following substances would be most strongly associated with the development of bone lesions?
Options
- AProstatic acid phosphatase
- BProstate-specific antigen
- CSerum alkaline phosphatase
- DTartrate-resistant acid phosphatase
- EUrinary hydroxyproline
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