Review Question - QID 218020

A healthy 66-year-old male presents to the clinic with a painful right hip that has worsened over the past two months. He underwent a total hip arthroplasty 5 years prior with the most recent imaging shown in Figure A. He underwent a recent CT scan showing a small fluid collection tracking along the psoas tendon. A review of his recent labs shows:

Serum Cobalt: 2.4 µg/L (normal: 0.7-3.4 µg/L)
Serum Chromium: 1.6 µg/L (normal: 0.5-2.5 µg/L)
Serum C-reactive protein: 1.7 mg/dL (normal: 0.3 to 1.0 mg/dL)
Serum Erythrocyte Sedimentation Rate: 31 mm/hr (normal 0 to 22 mm/hr)

Which of the following is the most appropriate next step in management?