Thanks for using HCM.
Simple renal cysts are an incidental finding on ultrasound
and usually do not require much treatment. Cysts are collection water like fluid inside a wall of a sac, lying close to the kidneys or sometimes forming a part of the kidney, like in your case which means the cyst is lying in the cortical part of the kidney. Xrays will be unable to reveal such cysts because of this consistency. Simple renal cysts are usually without any symptoms, however some cysts can cause pain on the right side of the abdomen when such cysts compress on adjoining organs. If the cyst continue to cause pain, your doctor can decide on aspirating the cyst.
Feel free for further queries.