If you have adenocarinoma, you may not have BAC. BAC is a subset of NSCLC and a rarer type of adenocarcinoma, but it acts very different than most NSCLCs. The oncologist said BAC is very very slow growing, it typically appears as multiple spots, and Tarceva is usually the drug of choice.
The good thing about BAC is how slow growing it is, the bad part is that it is not as responsive to traditional chemo.