hi Doctor, I have a strong pain in the left side (rear and front) is constant, I did X ray and A Catscan, and my doctor and the lung doctor both says ther're nothing in those exam, and sometimes I caugh blood it happened 3 times this year, they say probably it's my muscles or bone, but im sure itmy lung, I use to smoke like 10/day I quite on april/2005 and the first that I caugh blood is on may/2005.
thank you