I am having chest pain, pressure, short breath and have a myriad of tests to rule out gatro and heart issues, I am inclined to believe it is my lungs. I have had a chest xrays and CT scan and doctor says no cancer present. Does a CT scan always detect lung issues, such as cancer, or is there a special spiral CT scan that is better? I am a former heavy smoker and am told I just have anxiety issues, however the anxiety drugs are not helping my symptoms. Any advise you can give?