hi,
please see my message to your sister also on this message board - i strongly advise you to seek a further opinion - surgery is the best option for this type of cancer, as it so rare and chemotheraputic regimes are not developed enough.
My Dad was told that the tumor could not be removed and that his life was measured in months - we sought a second opinion, he had the tumor removed and is now getting back to full fitness. The op was v difficult and you need a specialist surgeon. My Dad's tumor was huge, attached to a major artery and stuck to a lung and bowel.
The surgeon was fantastic, we consulted sloan kettering yuman fong there told us that Prof Lodge is the best. (Prof Peter LODGE, St James Hospital LEEDS UK).
Don't give up hope - i wish you well in your fight.
jules
I can provide further contact details for Prof Lodge if you want - he will view your dad's films and give you an opinion.