My father was diagnosed with stage 4 liver cancer. Dr's said that it started in his gallbladder. He died 40 days later. During them 40 days, he had numerous tests done. To find out where it started & also where else it was in the body. It was everywhere....lungs,liver, lymph nodes, hip, bones....EVERYWHERE. My father had back surgery 6 months before being diagnosed. He has had a lot of medical issues over the years. Please help me understand how this went undetected. How long do you think he may of had cancer? Please help me understand this. Thank you-Lisa