Hypercalcemia Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 67-year-old male comes to his outpatient provider’s office for evaluation of fatigue and diffuse muscle aches. His symptoms started about a year ago and have been progressing over time. He also reports having bowel movement once a week with hard, pellet-like stool formation. Past medical history is significant for insulin-dependent diabetes mellitus type 2 and end-stage renal disease. He underwent a kidney transplant two months ago. His medications include insulin and sirolimus. The patient has a 35-pack-year smoking history but is no longer smoking. In the office, his temperature is 37.6°C (99.7°F), pulse is 68/min, respirations are 14/min and blood pressure is 115/74 mmHg. Laboratory testing reveals the following results:

 
 Laboratory value  Result 
 Serum chemistry 
 Serum calcium  11.2 mg/dL 
 Serum phosphate  2.4 mg/dL 
 Parathyroid hormone*  560 pg/mL 
  *Normal range: 10-55 pg/mL  

Which of the following is the most likely cause of the patient’s presentation? 

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