This is Dr. David
the right thing is to try radiation and chemotherapy (temodar) to attack the grade 4 malignant glioblastoma cancer in the brain to try to shrink it
radiation therapy and chemotherapy together can help improve your survival only by a few months.
it is up to you if you want to do treatment or no treatment
but you should have the option to do treatment if you want to fight the cancer
the oral chemotherapy pill Temodar is very well tolerated and has very few side effects.
I would ask to see a radiation oncology expert doctor as well in the uk and talk about radiation therapy.
let me know if you have questions.