A 72-year-old man presents with 6 weeks of progressive low back pain, fatigue and renal impairment. Blood results show creatinine 204 micromol/L (baseline 85) and corrected calcium 3.45 mmol/L.

1. Given this clinical picture, what historical features will you explore to confirm your diagnosis? 4 marks

2. List and justify (3) specific investigations that can help confirm your diagnosis. 3 marks

3. State your management priorities for this patient in the emergency department. 5 marks