Dad had glioblastoma.
Have you got the brain tumour book from the Canadian Brain Tumour Association?
It didn't help us much. We were basically dealing with symptoms as they arose.
Dad had an MRI in Toronto, July, 2006, we rode 2 1/2 hours in an ambulance, only for the oncoligist to tell us that it had recurred, 5 years after it had first been surgically removed and that he was palliative. Full stop.
Sent home. My mom had passed over May 2006.
Dad's was in Broca's area. Receptive language, then it spread to expressive language.
What you need to remember is that if the tumour is in the prefrontal cortex, the high level thinking skills in the front of the brain, it takes time for the tumour to affect autonomic functioning.
The oldest part of the brain, the brain stem (back of the neck) is where the autonomic functioning happens: breathing, digesting, ect.
This is the last part of the brain to deteriorate, which is why people with dementia can live a long time. The brain cells furthest from the heart, lungs, doesn't get blood and can be blocked by plaque.
I hope this helps.