TOPIC: RANDOM MIX
A 58-year-old man presents with bone pain, proximal muscle weakness, and Looser’s zones on X-ray. Laboratory evaluation shows low phosphate, normal calcium, elevated alkaline phosphatase, and elevated FGF-23. What is the most likely diagnosis?
A
Primary hyperparathyroidism
B
Tumor-induced osteomalacia
C
Paget disease of bone
D
Multiple myeloma