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Dr Mary Lei undertook her undergraduate medical training at King's College London School of Medicine and Dentistry and completed specialist training in clinical oncology at Imperial College Healthcare and Guy's and St Thomas' NHS Foundation Trusts.

Dr Lei spent two years as a research fellow in the Royal Surrey County Hospital and the University of Surrey. Her research focused on image-guided intensity-modulated radiotherapy (IMRT) in head and neck cancer and culminated in the award of a Medical Doctorate (MD) postgraduate degree. She was then appointed to a one year charity funded IMRT fellowship in head and neck cancer at Guy's and St Thomas' NHS Foundation Trust.

During her training, Dr Lei was the Chair of the Oncology Trainee Forum, representing the interests of clinical oncology trainees across the UK at the Royal College of Radiologists. She continues to be active in developing clinical oncology training in addition to roles as an educational and clinical supervisor.

Dr Lei has been a consultant clinical oncologist specialising in the treatment of head and neck and thyroid tumours at Guy's and St Thomas' NHS Foundation Trust since 2011. Currently, she is the lead for the clinical oncology radiotherapy research and development (R&D) group and also leads to research and development for the network thyroid cancer team.

Her research interests include novel therapies and predictive biomarkers in head and neck cancer. She is collaborating with colleagues in King's Health Partners on her work in this area.

• Radiotherapy

• Head
• Neck
• Thyroid
• Neuroendocrine tumours