A 55-year-old woman presents to the physician for a four-month history of increasing cough and dyspnea. Her vitals are stable and within normal limits. CXR shows a hilar lesion. Biopsy demonstrates round cells twice as large as lymphocytes and bearing little cytoplasm. There are no intercellular bridges or glandular organization. Which of the following serum abnormalities might be seen in this patient?
Hypercalcemia
Hyperkalemia
Hypoglycemia
Hypomagnesemia
Hyponatremia
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Cut-to-the-chase Answer (0:36):
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HY USMLE Answer (2:45):
