The size and location of ureter stones are the most important factors for predicting the spontaneous passage of the stone. Some doctors also recommend Tamsulosin to speed the passage of stones Lithotripsy is a good option for stones 1 cm or less in the kidney and upper ureter. Simple kidney cysts usually do not affect kidney function, but if it is causing symptoms or blocking the flow of blood or urine through the kidney it may need to be treated .Without knowing a detailed medical history it may be difficult to determine whether the cyst is causing stones. It is best to discuss your concerns with a nephrologist. Hope it helped. Good luck and take care!