Facial deformation in childhood cancer survivors: ‘We need to improve our radiotherapy approaches’
Facial deformation is a little-understood late consequence of radiotherapy for children with cancers in the head and neck, but one with potentially devastating impact. Radiotherapy researcher Lucy Davies, a former professional contemporary ballet dancer before a dramatic career change, breaks down the significance of her work

RRadiotherapy plays a vital role in the curative treatment of most childhood head and neck cancers, but it can be associated with long-term complications that appear in the months and years after treatment.
In approximately three quarters (77 per cent) of children who are treated with radiotherapy, damage to the healthy bone and soft tissues can cause notable facial deformation, including asymmetry, later in life. For most childhood cancer survivors, their confidence and self-esteem can be negatively impacted. Some children may even experience functional problems such as difficulties eating and talking.
Significantly, clinicians and researchers do not fully understand which children are at a higher risk of being affected, nor do they fully understand the gravity of what is like for cancer survivors living with the impact of facial deformation after treatment.
Radiotherapy researcher Lucy Davies aims to change that. Working as a Therapeutic Radiographer in research at the Christie NHS Foundation Trust and the University of Manchester, Lucy found her way to radiotherapy after an extraordinary career change from being a professional contemporary ballet dancer.
After successfully gaining the prestigious Health Education England (HEE)/National Institute for Health and Care Research (NIHR) Doctoral Clinical and Practitioner Academic Fellowship (DCAF), and being awarded nearly £320,000, Lucy began her doctoral programme in October 2024.
Her research seeks to better understand the information and support needs for childhood cancer survivors to manage the effects of facial deformation and to develop a better understanding of how to tailor radiotherapy to reduce this late effect for children treated in the future.
Over the course of the next three years, Lucy will be studying ways to minimise the negative effects of head and neck radiotherapy on the healthy bones in the face, developing more accurate ways of assessing facial deformation, and working with young people and their parents or carers to understand what it is like to live with the late effects of the treatment.
Synergy asked Lucy to help us understand the importance of her work, and how she plans to make such an important difference.


Developing a new approach
Developing a new approach
Around 400,000 children and adolescents are diagnosed with cancer each year worldwide, and a third of these have tumours in the brain, central nervous system, intracranial or head and neck region. Thankfully, advancements in cancer care mean that now, 85 per cent of those diagnosed with cancer in high-income countries will survive five years or more, and many will be cured entirely.
This does, however, mean that a large cohort of childhood cancer survivors are experiencing the late effects of radiotherapy. Working closely with a dedicated patient advisory group on this research, one particular childhood cancer survivor mentioned that “after surviving cancer, living with significant facial asymmetry has had the biggest impact on them, and they're so self conscious of their appearance. Currently, there is a lack of information and resources for patients,” says Lucy.
“Many of them feel very isolated and struggle by themselves, living with facial deformation in the years after treatment and not really knowing where to go or where to get help. Another individual mentioned that there needs to be new guidance in improving radiotherapy. If we can understand more about this late effect and potentially minimise the chances of developing facial deformation after radiotherapy, then that's going to have a huge impact on the quality of life for survivors.”
Lucy’s research will focus on three key aspects. The first of these, a facial structure atlas, will help her and the team to tell which parts of the face receive radiation during head and neck radiotherapy, and how growing tissues respond to different radiation doses. “One of our ambitions is to further tailor the radiotherapy to the individual to be able to deliver smarter treatment for children,” Lucy explains. “But what we don’t know is which structures in the face lead to more significant facial deformation. It can be dependent on where the tumour is located, the extent of the disease, and the treatment age of the individual. We need to improve our radiotherapy approaches.”
Developing a consensus-based facial atlas will enable dose assessment of the individual facial structures, supporting radiotherapy planning comparisons to quantify normal tissue dose reductions using proton beam therapy and conventional photon therapy.
Second, the team will be interviewing childhood cancer survivors living with facial deformation and their parents or carers to find gaps in information provision and support needs in the current healthcare services.
Finally, Lucy and the team intends to take facial photographs of head and neck cancer survivors to develop standardised outcome assessment measures, so that degree of deformation can be graded appropriately in clinic. Both 3D and potentially 4D photographs will be taken, with participants being asked to complete a patient questionnaire on perceptions of their face and appearance. The photographs will also be used to develop objective measurements of deformation.
Four childhood cancer survivors, aged between 17 and 29 years old, helped to shape the research design and methodology Lucy is using, and will meet regularly throughout the study to help steer the research direction. The findings, which will be presented following the study’s conclusion in September 2027, will be published in scientific journals and wider professional networks.
In particular, Lucy’s research asks five questions:





‘To have a meaningful impact, we need to collaborate’
Lucy has always been interested in paediatric cancer care and clinically has always had an interest in the treatment of head and neck cancer. For her undergraduate dissertation, she compared volumetric modulated arc radiotherapy to intensity-modulated radiotherapy on minimising toxicity in the treatment of head and neck cancers – a project that netted her a university prize for academic excellence.
The work within this PhD is part of a wider research goal aiming to address critical and under-researched late effects faced by survivors who have undergone head and neck treatments. SMILE is a multidisciplinary consortium dedicated to minimiSing long term iMpact of dentitIon and faciaL deformation in childhood cancEr survivors.
SMILE consists of paediatric clinical radiation oncologists, head and neck surgeons, dentists, medical and research physicists, computer scientists and radiographers, and operates in multiple projects – all with a key focus on this topic. The core team is based in Manchester, but collaborators are conducting research across the UK as well as in Europe and the US. “We’re all working collaboratively in these research areas,” Lucy adds. “We know that more needs to be done.
“To have a meaningful impact, we needed to go wider than just our region – wider than the UK. We really needed to collaborate worldwide, and work with as many people as possible that are familiar with this area.”

Bringing people and science together
Lucy is a radiotherapy researcher at the Christie NHS Foundation Trust, where she currently holds the position of NIHR doctoral clinical and practitioner fellow. She also had a baby last year – which has made the research process rather more hectic than she might have hoped. “When I was writing my research proposal and going through the competitive funding application process for the fellowship I was heavily pregnant, and and had my baby just weeks before the interview,” she says.
“So my life at the moment has been complete chaos! I am enjoying being a mum to a lovely little girl who has started walking and running around now like a little tornado.”
Over the past few years, Lucy has worked across research fields including proton beam therapy and the Christie’s novel magnetic resonance linear accelerator (MR Linac) service. But as of 1 October last year, she has commenced a three-year fellowship with the NIHR on their Clinical Academic Pathways as a clinical doctoral and academic fellow, all in service of her three-year clinical PhD.
Now six months in, a lot of Lucy’s time has been spent working with her patient group, developing the facial structure atlas, and creating her study protocols in preparation for getting ethical approval. The next step is to obtain NHS HRA approval to carry them out, which Lucy hopes will allow her to truly get started on them towards the end of this year.
Before this Fellowship, Lucy was successful in being awarded the NIHR pre-doctoral bridging scheme, a six-month programme that helped her develop the project proposal and her patient advisory group. Lucy’s journey to this point, however, has not been anywhere near simple. Before she became a radiographer, Lucy was a professional contemporary ballet dancer who attended a vocational classical ballet school in London and worked for several years as a dancer. It was only after suffering an injury in the course of her profession that she decided she wanted a change of career. “When I was looking to retrain after my wonderful, albeit short, dancing career, I always knew that I liked working with people and liked the idea of working within a healthcare environment,” she says.
“I didn’t necessarily want to be a doctor or a nurse, and radiotherapy offers some of the benefits of these roles. We get to work with patients and we get to build that rapport, but we also get to work with complex, advanced technologies, and it's bringing those worlds of people and science together.
“And then with that research element, you get to try to improve what you deliver. Not the same as what you do as a dancer, but the concept of always trying to improve your technique, what you deliver to patients, it matches up. If I hadn’t had my professional dancing career, I don’t think I would have had the resilience to go down this path.”
Lucy completed her undergraduate degree at St. George’s, University of London in 2013 with clinical placements at the Royal Marsden, before moving to the Christie – primarily because of the opportunities for research provided to allied health professionals, she says. In 2018, the Christie opened the first NHS centre for high energy proton beam radiotherapy in the UK. Previously, patients were sent abroad as part of the NHS Proton Overseas programme. A second centre has since opened at University College London Hospital.
One of Lucy’s research aims is to understand how proton beam therapy, specifically, affects the later development of childhood cancer survivors. This is because proton beam therapy has the capacity to be more targeted, more conformal, permitting lower radiation doses to close by healthy tissues, making it much more likely to be used with children. “I've always had an interest in paediatrics,” Lucy adds. “I’m keen to develop improved treatments so that we can improve the experience for patients.”
After working her way up the ranks of radiotherapy into more senior positions, Lucy moved over to the proton beam centre upon its opening, before it was clinically operational. There, she found opportunities to participate in service development and improvement projects while the proton beam service was still in its infancy. The Christie was the first cancer centre to treat NHS patients in the UK with high energy proton beam therapy. In fact, Lucy – alongside a fellow radiographer – treated the first ever patient at the centre.
Lucy then moved to a research radiographer post, where she brought her experience with radiotherapy to clinical trials. “That five years of experience really helped me understand the research delivery process,” she explains. “While I was in that role, I was able to undertake more service development, service valuation and small scale radiographer-led research projects.
“Then I started on the pre-doctoral bridging programme, and now I’m doing my PhD with funding from the NIHR. I’ve got a very supportive supervisory team with both clinical and academic excellence to help guide me and the project. I’ve had quite the circuitous route to get here!”
Lucy’s big jump from ballet dancer to research radiographer, to researcher and now to PhD candidate, wouldn’t have happened, she says, without the support of the people around her. She advises any radiographers – or prospective researchers – to just get involved and ask questions. “You don’t necessarily have to be leading that research,” she adds. “It’s quite a big jump from having no part in research to leading a project, so get involved in service improvement projects and audits. Speak to your patients, because they’re the ones using the service, and they can help you define your project aims and what’s really important to them.”
Bringing people and science together
Lucy is a radiotherapy researcher at the Christie NHS Foundation Trust, where she currently holds the position of NIHR doctoral clinical and practitioner fellow. She also had a baby last year – which has made the research process rather more hectic than she might have hoped. “When I was writing my research proposal and going through the competitive funding application process for the fellowship I was heavily pregnant, and and had my baby just weeks before the interview,” she says.
“So my life at the moment has been complete chaos! I am enjoying being a mum to a lovely little girl who has started walking and running around now like a little tornado.”
Over the past few years, Lucy has worked across research fields including proton beam therapy and the Christie’s novel magnetic resonance linear accelerator (MR Linac) service. But as of 1 October last year, she has commenced a three-year fellowship with the NIHR on their Clinical Academic Pathways as a clinical doctoral and academic fellow, all in service of her three-year clinical PhD.
Now six months in, a lot of Lucy’s time has been spent working with her patient group, developing the facial structure atlas, and creating her study protocols in preparation for getting ethical approval. The next step is to obtain NHS HRA approval to carry them out, which Lucy hopes will allow her to truly get started on them towards the end of this year.
Before this Fellowship, Lucy was successful in being awarded the NIHR pre-doctoral bridging scheme, a six-month programme that helped her develop the project proposal and her patient advisory group. Lucy’s journey to this point, however, has not been anywhere near simple. Before she became a radiographer, Lucy was a professional contemporary ballet dancer who attended a vocational classical ballet school in London and worked for several years as a dancer. It was only after suffering an injury in the course of her profession that she decided she wanted a change of career. “When I was looking to retrain after my wonderful, albeit short, dancing career, I always knew that I liked working with people and liked the idea of working within a healthcare environment,” she says.
“I didn’t necessarily want to be a doctor or a nurse, and radiotherapy offers some of the benefits of these roles. We get to work with patients and we get to build that rapport, but we also get to work with complex, advanced technologies, and it's bringing those worlds of people and science together.
“And then with that research element, you get to try to improve what you deliver. Not the same as what you do as a dancer, but the concept of always trying to improve your technique, what you deliver to patients, it matches up. If I hadn’t had my professional dancing career, I don’t think I would have had the resilience to go down this path.”
Lucy completed her undergraduate degree at St. George’s, University of London in 2013 with clinical placements at the Royal Marsden, before moving to the Christie – primarily because of the opportunities for research provided to allied health professionals, she says. In 2018, the Christie opened the first NHS centre for high energy proton beam radiotherapy in the UK. Previously, patients were sent abroad as part of the NHS Proton Overseas programme. A second centre has since opened at University College London Hospital.
One of Lucy’s research aims is to understand how proton beam therapy, specifically, affects the later development of childhood cancer survivors. This is because proton beam therapy has the capacity to be more targeted, more conformal, permitting lower radiation doses to close by healthy tissues, making it much more likely to be used with children. “I've always had an interest in paediatrics,” Lucy adds. “I’m keen to develop improved treatments so that we can improve the experience for patients.”
After working her way up the ranks of radiotherapy into more senior positions, Lucy moved over to the proton beam centre upon its opening, before it was clinically operational. There, she found opportunities to participate in service development and improvement projects while the proton beam service was still in its infancy. The Christie was the first cancer centre to treat NHS patients in the UK with high energy proton beam therapy. In fact, Lucy – alongside a fellow radiographer – treated the first ever patient at the centre.
Lucy then moved to a research radiographer post, where she brought her experience with radiotherapy to clinical trials. “That five years of experience really helped me understand the research delivery process,” she explains. “While I was in that role, I was able to undertake more service development, service valuation and small scale radiographer-led research projects.
“Then I started on the pre-doctoral bridging programme, and now I’m doing my PhD with funding from the NIHR. I’ve got a very supportive supervisory team with both clinical and academic excellence to help guide me and the project. I’ve had quite the circuitous route to get here!”
Lucy’s big jump from ballet dancer to research radiographer, to researcher and now to PhD candidate, wouldn’t have happened, she says, without the support of the people around her. She advises any radiographers – or prospective researchers – to just get involved and ask questions. “You don’t necessarily have to be leading that research,” she adds. “It’s quite a big jump from having no part in research to leading a project, so get involved in service improvement projects and audits. Speak to your patients, because they’re the ones using the service, and they can help you define your project aims and what’s really important to them.”
Find out more about SMILE
SMILE is a multidisciplinary consortium dedicated to minimiSing long term iMpact of dentitIon and faciaL deformation in childhood cancEr survivors.
Through SMILE, the team aims to address three critical and under-researched late effects faced by survivors who have undergone head and neck treatments:
1. Investigate the causes and effects of treatment on growing facial bones, muscles, soft tissues, and teeth.
2. Integrate the findings into clinical practice, improving follow-up care.
3. Innovate new approaches to minimise long-term impact for future patients.
Each year, the multi-disciplinary team — including paediatric oncologists, clinical oncologists, head and neck surgeons, dentists, medical physicists, research physicists, radiographers, and computer scientists — comes together to share ideas, progress, and new initiatives.
It works closely with dedicated patient and parent groups who regularly review initiatives to ensure survivor voices stay at the heart of everything they do.
Find out more information about SMILE online here: https://x.com/SMILE_cancer?lang=en
https://www.fundingawards.nihr.ac.uk/award/NIHR304075
Contact the team at smile.consortium@manchester.ac.uk.
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