"My name's Clara Markiewicz, I'm sixteen years old and here's my story.
When I was four years old, just a month or so after my birthday, I was taken to hospital by my parents - I had unusual bruising on my body and a cut that wouldn't stop bleeding. Worried that people might think they were hurting me, my mum and dad never imagined it might be cancer.
A few days after first going to hospital I was diagnosed with acute myeloid leukaemia (AML). I obviously didn't understand what was happening to me.
The first thing I knew was that I was being rushed to our local hospital in High Barnet, Hertfordshire (after my results came back that I was seriously ill) in the back of my neighbour's car.
It was a hot June day and I was strapped in the back seat, watching my mum saying goodbye to my little brother and dad. I still remember what I was wearing - a yellow sun dress. I remember not knowing whether to be scared or not, but very soon I knew something was very wrong with me. I was taken to The Royal London Hospital from High Barnet almost straight away.
Almost immediately I was being treated. I had tubes inserted all over the place, seven operations, four bouts of chemo and only a 50 per cent chance of survival.
I still have the scars from my Hickman line on my right side of my chest and my neck, a constant reminder of what happened to me all those years ago. Luckily I don't mind having scars!
I can remember a surprising amount from being ill, like pulling out my hair in front of horrified diners and my grandmother (who nearly fainted!) in the hospital cafe, throwing up on a nurse I didn't like and hiding under the bed when a nurse tried to take some blood and they ended up having to come under the bed with me to take the sample!
We lived at the hospital for five months and through my mum's birthday, but were thankfully we were out just before Christmas.
I don't have many side effects, although I did have a drug that could have possibly seriously damaged my heart, but thankfully, all I have is one slightly weakened heart wall. Also, ever since my first lumber puncture, I get very bad pain in my legs when I'm tired, but no-one is quite sure why.
I will never ever forget how truly lucky I am to be alive
I will never ever forget how truly lucky I am to be alive and I am grateful every day.I remember some other children who I'd made friends with dying on my ward - I will never ever forget how truly lucky I am to be alive and I am grateful every day.
Now I'm fifteen and I have never relapsed! I went back for very regular check ups and heart scans, but my five years came and went and never another trace! I still have regular checkups and scans though.
I'm due to have another operation this July to try to release some scar tissue in my neck (created by my Hickman line) that is catching on my collar bone and often makes moving my neck uncomfortable and painful.
Just this year though, we had a slight scare. I was getting unusually tired, achy and ill and after what felt like hundreds of tests and scans, we were relieved to hear that it wasn't cancer again. I have now been diagnosed with chronic fatigue syndrome (CFS) which could have possibly happened because of the cancer and / or the chemo, but no one's sure.
This means I get very very tired and achy easily and find it hard to do things that stress my body like running or dancing. Luckily I can hopefully be better by next summer and I can put cancer and its side effects well behind me, once and for all.
Sometimes I don't think people always understand how, to me, hospital is normal, and that having blood tests and operations are just part of my life. I know people look at me oddly when I tell them that I don't want to get drunk or smoke or do stuff that lots of teenagers get up to, and sometimes I get upset that they think I'm pathetic or stuck up because of it. But the thing is I've learned how precious life is and I want to treasure it forever.
Cancer has shown me how important it is to live life to the full and I don't know if I would be the same person I am today if I hadn't had to live through cancer.
I want to help as many children with cancer as I can
I have plans to become a children's nurse when I'm older, because I remember how amazing the nurses were and how they helped me and my family through me having leukaemia. I have great memories of playing on my ward with the nurses and they most certainly made it a much more manageable experience.
I hope I can help give other children the second chance I was so lucky to get.
Now that I am reasonably healthy, I want to be able to help as many children with cancer going through what I had to go through and I hope me and my story can be used in some helpful way."
Update on Clara - now 18 years old
"I am now 18 and have finished my A levels in Biology, French and Psychology.
I had an operation - my last ever, I hope! - in the summer of 2013 to remove scar tissue in my neck that formed as a result of my Hickman line. It was causing me pain and I couldn't hold my neck straight. It was also creating a worrying curve in my spine. Thankfully, the operation was successful and after some therapy to straighten my spine I really feel like it's all behind me now, once and for all.
I am starting my studies in children's nursing at Southampton University in 2016. It's the career I've wanted since having cancer.
I'm currently taking a gap year and working with refugees in Europe. I'm also planning a volunteering trip to Africa along with a holiday to Colombia with some friends.
It feels amazing to have reached 'adulthood' cancer-free and I plan to keep the rest of my life that way!"
Clara, November 2015
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