Hi and welcome to Healthcaremagic. Thank you for your query. I am Dr. Rommstein, I understand your concerns and I will try to help you as much as I can. It means that there is very small 0.5cm stone in your gallbladder and this should not cause any symptoms in ost cases. Cyst on kidneys is also minor and insignificant. If there is pain under right rib cage then it may be gallstone issue. In most cases, treatment of gallstones is considered necessary only if you are having symptoms. Of the various conventional treatments that are available, surgical removal of the gallbladder is the most widely used. Some alternative treatments have also been found to be effective in alleviating the symptoms of troublesome gallstones. When deciding what course of action to take for symptomatic gallstones, doctors usually choose from among three main treatment options: Watchful waiting, nonsurgical therapy, and surgical removal of the gallbladder. Though a gallstone episode can be extremely painful or frightening, almost a third to half of all people who experience an attack never have a recurrence. In some cases, the stone dissolves or becomes dislodged and thereby resumes its silence. Because the problem may solve itself without intervention, many doctors take a wait-and-see approach following the initial episode. I hope I have answered you query. If you have any further questions you can contact us in every time. Kindly regards. Wish you a good health.