Fiona M. Lewis is a paediatric oncologist based in Brisbane, QLD, Australia. She looks after children and families who are dealing with serious illnesses, from cancers in the brain to blood cancers, as well as some rare metabolic conditions. In her day-to-day work, she focuses on helping kids get the right diagnosis and the right treatment plan, step by step.
As a children’s cancer doctor, Fiona supports families through tough times. That can mean helping manage acute lymphoblastic leukaemia (ALL), and other childhood leukaemias. At times, it also includes brain tumours and related conditions, such as gliomas, gliomatosis cerebri, medulloblastoma, and posterior fossa tumours.
She also deals with some very specific tumour types. For example, embryonal tumours with multilayered rosettes and other complex brain growths can be hard to explain and harder to treat. Fiona’s approach is about taking the information one piece at a time, so families understand what’s going on and what the next steps are.
Alongside cancer care, Fiona works with children who have classic galactosemia and other galactose-related enzyme conditions, including galactokinase deficiency and galactose epimerase deficiency. These are not the everyday problems many people hear about, so it’s important the support is clear and practical. In many cases, early management matters a lot, and the plan needs to fit around the child’s life and routine.
In some situations, her role also overlaps with traumatic brain injury. That means thinking about the brain’s recovery and how to support the child afterwards, even when the situation feels scary and uncertain.
Fiona’s work also includes publications. While medical papers can be technical, the goal is simple: sharing knowledge that can help improve how children are diagnosed and treated. This kind of work usually goes hand in hand with clinical care, because you learn from each patient and each case.
For families in Brisbane and around Queensland, Fiona provides steady, ongoing paediatric care for children facing difficult diagnoses. Every family’s situation is different, and at times plans need to change as results come in. Fiona stays focused on what matters most for the child’s health, comfort, and long-term outlook.
