Watch a report by ITV News Anglia's Stuart Leithes.
A mother from Ramsey in Cambridgeshire is trying to raise £75,000 for cancer treatment, so she can spend more time with her young son.
NHS Doctors have told 41-year old Amelia Martin that the position of her tumour means it's inoperable and can't be treated with radio or chemotherapy.
The family want to raise the money to send Amelia to a centre in the Czech Republic where proton beam therapy is offered to target the cancer.
- Traditional radiotherapy uses x-rays to target a tumour, but it also damages the surrounding tissue.
- In proton beam therapy much smaller particles are fired at the tumour and stop when they hit it, releasing energy at the tumour, causing less harm to surrounding tissue.
Two NHS facilities which will offer proton beam therapy are being built in the UK, but the first in Manchester isn't due to open until later this year.
NHS Doctors have told Amelia there's nothing more they can do and decided not to fund her treatment abroad, which is why friends and family have started fundraising to send her to the Proton Therapy Centre in Prague.
Amelia wants the treatment to prolong the tie she has with her family, but also hopes doctors could learn more about the effectiveness of proton therapy from treating her rare condition.
Watch a short video clip with Justine Alford from Cancer Research UK as she explains more about proton beam therapy.
A friend of Amelia's has set up a JustGiving page to raise funds to pay for her treatment.