A seven-year-old boy who was diagnosed with a terminal brain tumour is defying the odds with pioneering treatment in Mexico.

Luke Stewart suffers from DIPG, a rare children's illness with no cure.

The youngster, from Tranent in East Lothian, was diagnosed in January and his devastated parents Jennifer and Mark were told there was nothing the NHS could do.

The parents-of-three prepared for the worst when doctors warned them Luke may only have months to live.

They researched other treatments and came across a medical centre in Mexico, which is leading research and treatment for DIPG sufferers.

Jennifer told STV News: "You never expect somebody to tell you that you've got six to nine months with your child, you just don't expect it. But you'd do anything for them.

"Regardless of what they told me, I thought 'no, I'm not accepting that - we'll find something'. And we have."

A huge fundraising effort was launched to pay for the travel and treatment costs, with £280,000 raised to date.

Now Luke is making astonishing progress after a number of rounds of chemotherapy and immunotherapy in Mexico.

He is now back at Windygoul Primary full time and his energy levels have vastly improved.

Luke's face no longer droops and he has been well enough to go back to playing football.

He struggles to move his right arm but that is also showing signs of improvement.

Doctors are not sure if the issue with his arm is connected to the tumour or a side-effect of the treatment.

Luke, who will turn eight in December, will return to Mexico in five weeks' time.

Enough money has been raised to fund his next four rounds of treatment but the fundraising needs to continue to pave the way for future visits to Mexico.

Mrs Stewart added: "It's incredible, I just want to thank everybody so much for what they've done.

"I wouldn't be here without them - and Luke wouldn't be at the stage he is at without everybody getting behind us."