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Retired NBME Step 2 CK Form 7 Answers

step2ck_form7/Block 2/Question#22 (reveal difficulty score)
A previously healthy 57-year-old man comes to ...
Increased urinary excretion of calcium ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: endo

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submitted by โˆ—step_prep5(246)
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  • Middle-aged man with signs/symptoms and CT scan consistent with renal calculi who has lab findings consistent with primary hyperparathyroidism (increased calcium, decreased phosphorous, increased PTH)
  • Key idea: Although elevated PTH levels will lead to increased reabsorption of calcium from the renal tubules, the amount of calcium being filtered by the kidney will still be relatively higher than normal due to increased calcium in the blood

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osler_weber_rendu  The option says increased urinary "excretion", not filtration. Surely Ca excretion is not increased in Primary HyperPTH! +2
brise  @osler_weber_rendu urinary Ca amount is increased in primary hyperparathyroidism... +1



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