I am not sure why they are doing the needle biopsy. They have already staged it. Maybe they want to confirm the diagnosis with physical evidence. It might aid in the choice of chemo treatment, but I am not sure. Needle bipsies are often time inconclusive because they don't get a good sample and they are reluctant to keep poking the needle into your lung. There is a remote risk of seeding the cancer into your chest wall as the sample is extracted from your tumor. There is a possibility that your lung will collaspe when the needle is extracted, but this is not too big of a deal. they will be prepared for it. They will insert a chest tube. I have had 2 FNAs in the past and I had a collasped lung each time. It was more of an incovnenience than anything else. They wanted to keep me in the hospital overnight, but I declined. I told then that I would go to the ER room at the local hospital the next day to have the tube extracted from my chest.
Don M