s pretty much too late. For treatable lung
cancer and to detect it early on, a
CAT scan needs to be performed. I also know that I am watched on a regular basis and they do CAT scans on me because I used to smoke (I know, stupid, but I started when I was a punk kid), and I am at high risk.
Also, a dry cough is an indication of lung cancer, and you need to be checked thoroughly by a respiratory specialist. Good luck.