How long would it take for a healthy person to develop stage 4 cancer?
My grandfather was recently diagnosed with stage 4 lung cancer. He had been going to the doctor every 6 months to get his lungs checked on because he had some problems with them in the past, but none of them were cancerous. I would like to know if its possible that his health went from good to him having stage 4 cancer in only 6 months, or if the cancer had been growing for a while and the doctor just didnt see it.










