A girl who beat cancer she first had when she was just 10 has today told of her devastating relapse.
Wiktoria Lach overcame acute lymphoblastic leukaemia (ALL), which caused her bones to become sore, a loss of appetite and a frequent high temperature.
But the girl relapsed a few years later and, after a bone marrow biopsy, she had to spend time in hospital again.
Now Wiktoria has gone through different types of chemotherapy, two stem cell transplants and T-Cell therapy, which is a very complex and specialist treatment whereby T cells are adjusted in the body.
She's now 19 and using her experience to help others today - World Cancer Day - because 4,500 children and young adults are still diagnosed with cancer in the UK each year.
Wiktoria, who was born in Poland as a baby and moved to Northern Ireland with her family when she was nine, told Belfast Live: "It’s a lot to take in. It doesn’t matter if you’re a man, woman, young, old, weak or strong, cancer has a big impact on anyone touched by it. It changes the way you live your life and not everyone deals with it well.
"There are happy days but there are also sad days when sometimes you have to fake a smile and pretend that you’re happy because you don’t want your close ones to see that you’re weak. You want to stay strong for them and you certainly don’t want them to worry."
Wiktoria is currently 180 days post her second transplant. Both times her brother Krystian has been the donor.
Cancer Fund for Children says it wants to ensure children and young people impacted by cancer receive "the right support, at the right time, in the right way".
Wiktoria first fell unwell with symptoms on a family holiday in around 2014.
"I was always a healthy kiddo but at the age of 10, during the summer holidays, whilst visiting family in Poland I started feeling a bit unwell. No one knew what was going on," the teenager said.
"My bones were sore, I had no appetite, I had a really high temperature and felt generally unwell. This was when I was first diagnosed with leukaemia (ALL).
"My diagnosis took everyone by surprise. Nobody in our family had a history of cancer and as you can imagine, this was a really tough time for me and my parents. My holiday turned into an extended holiday as I started my treatment in Poland, in a hospital in a town called Zabrze which was a bit of a drive from where my family live.
"I stayed there with my mum for about three months. Towards the end of that time, the doctors and nurses began preparing me for my flight back to Northern Ireland so that I could have my treatment here."
Wiktoria and her family then got on a flight back to Northern Ireland where she had the rest of her treatment.
She continued: "After a year or two, I was feeling so much better. The treatment had worked to my amazement. Or so we all thought.
"A few years after my leukaemia was cured, my mum received a phone call for me to go for a check-up. This did seem a little strange, but we thought nothing of it at the time. My doctor told us that she suspected that the leukaemia had come back but to make sure I had to have a bone marrow biopsy. I was terrified!
"Whilst waiting patiently for the results, my head was full of thoughts like… is it really back? Why me? What is going to happen now? What about school? Keep in mind I was 15 at the time, about to turn 16. This meant that if I was really ill again, I would have to be transferred to another hospital because I wasn’t technically a child anymore.
"This did happen in the end."
The 19-year-old woman says she was then moved to the City Hospital in Belfast.
Wictoria added: "At first, I didn’t know what to expect or what the nurses and the other staff were going to be like. Fortunately, they turned out to be the nicest people ever and they welcomed me with open arms!
"I am now 19 and have gone through goodness knows how many different types of chemotherapy, two stem cell transplants and if that wasn’t enough, a T-Cell therapy in London UCL hospital."
Wiktoria said: "Last year, I met this wonderful lady called Lucy.
"At first, I didn’t know what she was going to be like but she turned out to be the bubbliest person I have ever met. She never fails to brighten up the room! Now every time I come down to the Bridgewater Suite for a check-up (which can take hours) I don’t have to worry about being bored because Lucy always has something for me to do.
"When she comes up to the suite, Lucy brings stuff to occupy me.
"We always have so much fun and Lucy always manages to put a smile on my face.
The 19-year-old added how "sometimes the simple things like a conversation can make someone’s day", and how Lucy does more than that.
Wiktoria explained: "During a recent longer stay in hospital, Lucy made sure to come down to the ward to see if I needed anything, to have a chat and keep me company. Even when she couldn’t come up to visit, Lucy made sure to send me a text message to check in and make sure I was okay.
"I can see that the work she does, she does with passion. She likes doing it and she likes helping people, but I don’t think Lucy knows how much she really is helping young people like me. I’m extremely happy to have met Lucy and I hope that she keeps doing what she’s doing."
The teen explained how much of a difference Cancer Support Specialist Lucy from Cancer Fund for Children has made to her life.
A donation of £30 could help provide a young person like Wiktoria with an hour of support from one of Cancer Fund for Children’s Cancer Support Specialists. Go to www.cancerfundforchildren.com/donate online today or call 028 9080 5599.