Hello, I am so sorry to hear. My Mother has been diagnosed with Stage 4 Lung cancer. She has been having lung x-rays every year and it has only been this year that it showed something, which is so frustrating. We only got the news yesterday and she is now having to go see on Oncologist as they are planning Chemo with immunotherapy plus radiation. The specialist did mention that with this type of cancer, it usually goes undetected until it has spread. I do hope that you get to spend some time with your Dad and remember the good times. ... View more