Review Question - QID 210479

A 70-year-old man presents to the emergency department after a witnessed fall outside of a grocery store. He has left hip pain which has been progressively worsening for the past 6 months. He denies hitting his head during the fall but has experienced worsening headaches. His temperature is 98.6°F (37°C), blood pressure is 110/60 mmHg, pulse is 80/min, and respirations are 18/min. Examination of the right lower extremity reveals mild crepitus at the hip, appropriate range of motion, adequate distal sensation, and palpable posterior tibial and dorsalis pedis pulses. Laboratory workup shows the following:

Serum:
Ca2+: 9.0 mg/dL (normal: 8.9-10.1 mg/dL)
Alkaline phosphatase: 876 U/L (normal: 40-120 U/L)
25 hydroxyvitamin D: 89 ng/mL (normal: 20-100 ng/mL)
Parathyroid hormone: 30 pg/mL (normal: 10-65 pg/mL)

A CT scan is ordered and shown in Figure A. Which of the following is most associated with this patient's condition?