6. A 41-year-old woman has hypocalcemia, hyperphosphatemia, and decreased urinary phosphate excretion. Injection of parathyroid hormone (PTH) causes an increase

6. A 41-year-old woman has hypocalcemia, hyperphosphatemia, and decreased urinary
phosphate excretion. Injection of parathyroid hormone (PTH) causes an increase in
urinary cyclic adenosine monophosphate (CAMP). The most likely diagnosis is
A primary hyperparathyroidism
B. vitamin D intoxication
C. vitamin D deficiency
D. hypoparathyroidism after thyroid surgery

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