Hello, renal cysts are usually seen as benign incidental findings on ultrasound or CT scans. Recent data suggest that these cysts may reflect the early stage of end organ damage. According to your situation, we need to differentiate simple renal cyst from complex renal cyst. If it is simple renal cyst, topping can be done. But if it is complex renal cyst, we need to evaluate the possibility of malignancy, it is necessary to do partial excision or even nephrectomy.