@janlanderz- Actually that's fine that he set up a separate appointment to answer your questions. He might have been very busy the day you saw him. I have had lung cancer for 22+ years with 2 types of cancer. I am stage 4 with no metastasis. I have asked every darn question know to mankind (lol) and have found a lot of them can't be answered. Have you googled your question? Can I ask what your question is so that I can help you understand more?