Renal cysts are a common and frequent disease in urology. If small cysts are found in both kidneys, they usually do not matter and are a benign lesion. Small cysts do not cause any clinical symptoms and will not affect the function of the kidneys, not to mention the health of the human body. So don’t worry too much about small cysts in both kidneys. Small cysts in both kidneys can be observed by regular ultrasound of the kidneys. According to statistics, about 50% of adults over 50 years old will have kidney cysts, which are benign lesions. So it is not overly stressful to have small cysts in both kidneys. Renal cysts tend to cause obvious clinical symptoms only when they are large in size, and they usually need to be treated when they are more than 4cm.