I have heard on here about clubbed fingers being an early signal of lung cancer. Do you know how true it is? Have any of you that have been diagnose have this condition? I was over seeing my mom today who has cancer and I noticed that my dad has been coughing more. Well I also looked at his fingers and low and behold their they were. They were definately clubbed. I told my mom that he needs to be seen. He said he would go (I didn't tell him what I know cause you never know) but he wants to wait for my mom to be stable and he could afford the copay. I am calling his doctor tomorrow to check on his insurance. Anyway am I being over paranoid because my mom has this?