Donald,
This is a hard decision, that must be made ASAP, by your father, yourself and your family. I can see ya'all's concern here. I have extended small cell lung cancer. I was Dx with it, in Dec. of 07.' My lung cancer had already met. to my liveer and bones. After having completed 4 chemo therapy sessions, my CT/ PET scans, I was told that 'all' my cancer cells had decreases a ton. I was asked to go ahead and do 2 more chemo treatments. I finished doing them, and I am in a holding pattern for now. This is just until I have cataract surgery (one eye for now) done on myself. After this surgery, I can start my new therapy, of using a chemo pill every day for 2 weeks, then I'll be off them for a week. I am not due for more scans until the end of June.
I have read on this site and other sites, about how successful these brain procedures, to zap away cancer cells have been for said patients. I have only come across one person who had a bit of memory loss, after having this procedure done. But, things were being done for this patient and they said it has not really been a problem for the family and the patient.
I am not a Dr. of course. I can only speak for myself, here. In doing so, I must tell you, if it were me having to make such a decision for myself???? Well, I would do it. I would tell them to make sure they get it all out of there. That gama knife sounds pretty good to me, and not as avassive, either. In any event, I would research this a bunch, before I would allow it to be done on me. But, I'd make my decision as quickly as I could. When it comes to the brain, one shouldn't wait too long. I mean, on deciding what way they desire to handle their care.
Good luck, friend. May God give ya'all the strength that ya'all will need, to handle all that is put upon ya'all to do.
God Bless & Take Cre,
Rosie
Savannah, GA.