HY USMLE Q #1004 – Endocrine

A 36-year-old woman with multiple comorbidities sustains a pseudofracture of the left hip after falling from the curb to the ground. She does not drink or smoke. Serum studies show:

Calcium                                                                             7.2 mg/dL
Phosphorus                                                                    9 mg/dL
Creatinine                                                                       3.1 mg/dL
Alkaline phosphatase                                               400 U/L

Which of the following is most contributory to this patient’s fracture?

  Hypomagnesemia
  Metastases
  Osteitis deformans (Paget disease)
  Osteomalacia
  Parathyroid adenoma