Good AFTERNOON

MY HUSBAND IS A STAGE 4 LUNG CANCER ,THE LUNG IT BEEN THERE BUT NOT GROWING HE BEEN IN TARCEVA FOR 2 YEARS FOR THE PAST 6 MONTH HE HAD NECK PAIN HIS DOCTOR ORDER CAT SCAN ,MRI AND ALL TEST IN THE BOOK ???????? AND NOTHING HE GO REALY SICK IN THE PAST 2 MONTHS NOW WE JUST GOT THE NEWS THAT IT HAD TRAVEL TO THE BRAIN,DOCTOR TELL ME THERE IS NOT MORE TREATMENT,I DONT WANT TO GIVE UP IF THERE ANYTHING TO DO?