Hi, Thanks for writing in. Angiomyolipoma is a benign condition which is a tumor containing vascular, smooth muscle and fat components. It is a lump in the kidney and might grow to a large size and cause pain and discomfort. Usually symptomatic angiomyolipomas require surgical treatment if they are causing symptoms. It is exceeding 5 cm and therefore a surgery might be recommended as an acceptable form of treatment. Since you are also participating in physical activities therefore a relation of the pain with the pinching of nerves and muscle irritation cannot be ruled out. The image of the tumor is to be carefully studied and this will tell if the pain is indeed from the tumor you are having or any complication like hemorrhage. You might get ultrasound scans done every 3 months. Please do not worry.