The nurse is caring for a school-aged child with Burkitt lymphoma. A review of the child's laboratory results reveal serum calcium 8.1 mg/dL (1.9 mmol/L), serum potassium 6.1 mEq/L (6.1 mmol/L), and serum phosphorus 5.9 mg/dL (3.6 mmol/L). Which pathophysiological process is associated with the child's laboratory results? Reference range: Total Calcium [8.8 to 10.8 mg/dL (2.2 to 2.7 mmol/L)] Potassium [3.4 to 4.7 mEq/L (3.4 to 4.7 mmol/L)] Total Phosphorus [4.5 to 6.5 mg/dL (1.45 to 2.1 mmol/L)]