Thxs Cheryld & PaulB for your quick response

As per Doctors , they said my father age factor is the main reason to not do surgery and other chemo...At age of 74 it is very tough to tolerate.They didn't do biopcy, only did PET & start Oral Chemo, they said it will not remove cancer but it can be stop, if patient's body response is well. They strictly said v can't do surgery at this stage.yes here doctors are extremely well qualified & experienced. But still i have doubts that many people have recurrence but still they survived very well ,even at old age...Now this end of this month again PET ll do...lets see what ll come out...

I hope for best...

Thxs Guys

Good Luck