Simple cyst of kidney

Simple kidney cysts are fluid-filled sacs that form in the kidneys. Simple kidney cysts usually do not cause symptoms or harm the kidneys. Most simple kidney cysts are found during imaging tests done for other reasons. Treatment is rarely, if ever, needed for simple kidney cysts.Extremely rarely do simple kidney cysts transform into tumors. This potential can be re-evaluated on your next Prenuvo scan.It is quite common that kidney cysts change size over time.