I recently had an arterial kidney scan done to check on a stent that was placed there 2 years ago. The stent is still open; but the doctor mentioned that I had cysts in both my kidneys and my liver. He said that we may need to do another check on the liver in about 6 months to see if they had changed, but did not seem concerned about the kidney cysts. My kidney and liver function tests are both normal. However, I have been experiencing some discomfort in the kidney area for several months now and the pain seems to be getting more severe. It only seems to hurt at night and is usually a dull ache. It seems to spasm when I turn over or get up. Any suggestions as to what this could be?