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.

Posted by USMLE252
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6 comments:

  1. YSJune 24, 2008 at 11:45 PM

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

    ?

    ReplyDelete
  2. StephanieFebruary 4, 2009 at 12:08 AM

    hi..r u a doctor now?..

    ReplyDelete
  3. AnonymousJune 3, 2009 at 12:49 PM

    What's the answer?

    ReplyDelete
  4. USMLE252June 3, 2009 at 2:31 PM

    The answer is "C" Renal failure.

    ReplyDelete
  5. MOSALLAMFebruary 9, 2010 at 9:48 AM

    THE CORRECT ANSWER IS C

    ReplyDelete
  6. AnonymousOctober 18, 2011 at 1:45 PM

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

    ReplyDelete

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