Undernutrition is the most prevalent form of malnutrition in paediatric cancers, and poor socio-economic status can increase this risk irrespective of the type of cancer or stage of cancer. Constant monitoring of nutritional status (NS) and early intervention to correct malnutrition in paediatric cancer patients at diagnosis and throughout treatment could minimise the side effects of treatment, improve survival, and reduce the risk of nutritional morbidity with a positive imp