Q. A 4-year-old girl presents to the pediatrician with abdominal distension and pain for the last month. She also complains of nausea and vomiting. On physical examination, there is a palpable mass in the left upper quadrant of the abdomen. A CT scan of the abdomen and pelvis reveals a large solid mass arising from the left kidney, suggesting Wilms tumour. The patient is referred to an oncology specialist for further management. What is the appropriate management of this patient?