After Callie Blackwell’s received the news her son only had three days to live she made a decision which ended up curing the cancer that was killer him.
Young Deryn was fighting a one-in-seven-billion form of cancer called Langerhans cell sarcoma.
Desperate Callie gave her son cannabis oil just to ease his symptoms, after he suffered with immense pain, but she believes it led to his amazing recovery.
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The brave mum revealed after three unsuccessful bone marrow transplants she felt she had nothing to lose.
Appearing on This Morning she told Holly and Phil: “Honestly the effects of it blew my mind. It wasn’t what I expected.
“We noticed within half an hour he was chilled out, the anxiety stopped, he was able to relax.”
What made this story heartbreaking was that Deryn and his beloved mother had even prepared his funeral after he was moved to a children’s hospice.
Deryn, who was first diagnosed with leukaemia at the age of 10, told the hosts: “I planned my funeral. It was gonna be fancy dress and I’d chosen all the costumes for people.”
Talking about how she came to the decision of treating her son with cannabis, Callie explained:
“When his secondary cancer arrived, I turned to the internet and cannabis just kept popping up, but I would dismiss it and dismiss it.
“The morphine wasn’t working against his hands or stomach, so I asked for a cannabis-based product and she said, ‘We can’t because it hasn’t been licensed for children’.”
But after taking matters into her own hands Callie revealed: “I thought, ‘What have I got to lose?'”
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And fortunately Deryn, who wants to become a chef when he’s older, made a full recovery and is now “completely healthy” despite enduring four years of pain.
Viewers watching from home praised Callie and couldn’t believe how brave Deryn had been.
One wrote: “What a brave young man Deryn is. So smiley and so strong when hes battled two such terrible diseases #ThisMorning.”
“Moving story of the boy who recovered with Cannabis use. Really hope he gets a vegan chef apprenticeship #ThisMorning,” another tweeted.
A third added: “What a remarkable story! #Oneinabillion #ThisMorning.”