Just after her first birthday, a lump on little Elizabeth Rysdale's eye led to a diagnosis of leukaemia.
Elizabeth's father, Andrew, tells us her story.
"This is the story of my daughter, Elizabeth Mary Rysdale, who was born on 20th December 2004, the day that London submitted the bid for the Olympics.
Elizabeth's birth date qualifies her for the 2012 Children's Promise and she will be invited to take part in one of the Olympic Ceremonies.
Just after her first birthday, we noticed that a lump was forming in her left eye. After a couple of appointments with an eye consultant and just before she was due to be transferred to Moorfields Eye Hospital in London, we were told that she had been diagnosed with acute lymphoblastic leukaemia (ALL).
Elizabeth was immediately transferred to the John Radcliffe Hospital in Oxford where she spent the following few weeks.
The two year treatment regime that followed involved daily chemotherapy, which we gave her. Once a month she would go to Stoke Mandeville for a stronger dose and a five day course of steroids too. Every three months we would take her to the John Radcliffe for a lumbar puncture.
She also had weekly blood tests. The blood samples would be taken using a Hickman Line in her chest - she'd had one inserted on her first visit to the John Radcliffe. Of course, she also had to take numerous different drugs over the two years.
Since diagnosis Elizabeth has been in and out of hospital with various infections. Around a year after diagnosis, during the second of her two intensive treatment periods, she fell very ill and lost a large amount of weight very quickly. She had to have a nasal feeding tube fitted to help her regain her weight. She kept it for six months.
Despite this gruelling treatment at such a young age, Elizabeth has remained an extremely bright and bubbly little girl. She nearly alway has a smile on her face and very rarely complains about the treatments that she had to go through.
Elizabeth's five year old brother, Joshua, has had his life turned upside down by Elizabeth's illness. Nevertheless he remains very worried and protective of her, especially when she has to go into hospital.
Our family life, of course, has had to change dramatically. Elizabeth is very prone to infections, so no swimming allowed and any crowded places are to be avoided. We have restricted our holidays to this country. Even on the two holidays we've had, Elizabeth has fallen ill and had to be admitted to the local hospital.
Elizabeth's treatment finished on 30th April 2008 - a massive milestone for us, although we won't stop worrying about her.
On 13th April 2008 I ran the London Marathon, supporting CHILDREN with LEUKAEMIA.
Since Elizabeth's diagnosis, Fiona (Elizabeth's mum) and I have received such amazing support from so many people and organisations. Completing the Marathon means that I can go a small way towards giving something back.
I also hope to help prevent others from having to go through Elizabeth's ordeal."
Andrew completed the Flora London Marathon and raised over £3,000.
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