Kidney cyst 1.2cmx0.9cm indicates that the kidney cyst is small, usually has no great effect on human body and usually does not need special treatment, but you need to pay attention to review the kidney ultrasound every half a year or once a year. Simple kidney cysts usually have no special symptoms, only when the cysts are large and compress the surrounding tissues, then obvious symptoms will appear, such as back pain, abdominal pain, hematuria and so on. At present, it is generally believed that when kidney cysts are small and have no obvious symptoms, they usually do not need treatment. 1.2cmx0.9cm kidney cysts are not big, so they usually do not have much effect on the human body. It is recommended that patients review the renal ultrasound in half a year or one year to observe the size of the cyst, and if the change is rapid, it is necessary to consult a doctor in time. If the cyst is large and pressing the surrounding tissues produces obvious symptoms, you can choose surgery under the guidance of the doctor for treatment, such as laparoscopic surgery, nephrocystectomy and so on.