Sir, I have Bilateral renal cortical cyst, found during scanning. The result reads. .both kidneys are normal in size, site and contour, right kidney shows lower pole cortical cyst 5.7cm and left kidney shows lower pole cortical cyst 5.1 cm, movement with respiration is normal, ureters not dilated, no perinephric collection What is the treatment for this cysts? Is it a major problem?