Q. A 63-year-old male has presented to the hospital with complaints of gross hematuria, flank pain, and fatigue for the last two months. He had a history of hypertension and was on antihypertensive medication. Physical examination revealed a palpable mass in the right upper quadrant of the abdomen. The laboratory findings were significant for a serum creatinine of 1.4 mg/dL and a hemoglobin level of 11.2 g/dL. Urine analysis showed the presence of red blood cells and urine culture was negative. CT scan of the abdomen and pelvis revealed a 6 cm mass in the right kidney. There was no evidence of metastases. Which of the following is the most appropriate management for this patient?