A 59-year-old woman has fatigue and constipation. Calcium is 11.4 mg/dL, albumin is normal, phosphorus is low, and intact parathyroid hormone is

Question

A 59-year-old woman has fatigue and constipation. Calcium is 11.4 mg/dL, albumin is normal, phosphorus is low, and intact parathyroid hormone is elevated. She takes no thiazide or lithium. Which of the following is the most likely diagnosis?

Accepted Answer

Primary hyperparathyroidism

Answer

Vitamin D deficiency

Answer

Humoral hypercalcemia of malignancy

Answer

Hypoparathyroidism

Answer

Milk-alkali syndrome with suppressed PTH

Primary hyperparathyroidism — USMLE Step 3 MCQ

A 59-year-old woman has fatigue and constipation. Calcium is 11.4 mg/dL, albumin is normal, phosphorus is low, and intact parathyroid hormone is elevated. She takes no thiazide or lithium. Which of the following is the most likely diagnosis?