A 36-year-old woman comes to the physician for a 6-month history of progressively worsening dry cough. Vitals are within normal limits. Physical examination shows mild redness of the shins. Serum calcium is 12 mg/dL. A chest x-ray is shown.
Which of the following is the most likely explanation for this patient’s calcium level?
Decreased osteoclast activity
Glandular hyperplasia
Increased bone turnover
Increased hydroxylase activity
Increased proximal convoluted tubule reabsorption
