Hello there.  It comes down to the details of your dad's cancer and what options the doctors are recommending.  It has to be your dad's own choice though. Does he want you to get opinions from other people on this forum or is he happy to make the decision on his own? If he wants you to canvas opinions here  and you provide some more detail about his condition and what treatment is being recommended there may be some other posters here who have faced similar choices and can tell you of their experiences.  But ultimately everyone is different and needs to make their own decisions.    I do understand that this is hard for you but you what you feel is best may not be what he wants.  Just make sure he understands the options available to him.  Of course we are happy to talk with you about your worries for your dad - many people here (myself included) do understand how worried you must be.  Annie