I Had A Benign Tumor Removed From My Right Kidney.

I had a benign tumor removed from my right kidney. My wonderful doctor says I have a cyst on that kidney now and it is not a problem unless it creates pain. Now I have a pain in my lower back on the right side. It is my lower back. It feels like a muscle pain but I wonder if the location indicates that I should see him. I am 69 and in good health.