A 65-year-old woman presents with acute, severe flank pain radiating toward the pelvis

She also complains of some chronic musculoskeletal pain and indigestion. Radiology reveals a kidney stone in her ureter. Blood chemistry reveals hypercalcemia, and urine chemistry reveals hypercalciuria and hyperphosphaturia.

An endocrine pathology most consistent with these findings is:

A. infection of the GI tract that inhibits calcium and phosphate absorption
B. an adenoma of the parathyroid glands, secreting excessive PTH
C. hepatocellular carcinoma of the liver, resulting in overproduction of 25-hydroxyvitamin D
D. a medullary carcinoma of the thyroid, secreting large amounts of calcitonin
E. autoimmune destruction of the parathyroid glands


ANS: B

Anatomy & Physiology

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