I went to doctor august 09 with shortness of breath and pain under right arm and in upper back.Got an X-ray found two spots on my lungs, got a MRI done and it show the two spots on my lungs also doctor said that the spots was to small to do anything with for me to come back in six weeks. I didn't go back because I am afriad, should i be. Yes I have pain in my back sometimes and yes I do smoke.