Find the Gold Standard... Endocrine question


A 65 y/o male is admitted to the hospital for a lower lobe pneumonia. His past medical history includes diabetes mellitus, COPD, and hypertension. He is a chronic smoker, with a 50 pack year smoking history. Upon admission to the hosptital, his lab report shows decreased serum calcium levels, elevated phosphate levels, and and elevated intact serum PTH levels. What is the most likely cause of abnormal lab values?

A. Lung cancer
B. Primary hyperparathyroidism
C. Renal failure
D. Thyroidectomy
E. Plasma cell infiltration in the bone marrow

Please leave you answer in the comments section along with what you think is the "gold standard" of this question. I will post my reponse tomorrow.

6 comments:

  1. C. Renal failure --- "decreased serum calcium levels"

    ?

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  2. What's the answer?

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  3. The answer is "C" Renal failure.

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  4. Renal failure ________decreased PO4-- renal excretion _____decreased serum CA++ level _____increased PTH.

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