A child's appropriate development stems in large part from proper nutrition. Malnutrition is an adverse prognostic factor in children with cancer, and its prevalence is highly variable. Currently, there is no standardized definition and assessment method of nutritional status in pediatric oncology. A complete nutritional assessment includes anthropometry, biochemical, clinical, and dietary assessments. In this article, we explore these methods and suggest practical approaches for pediatric cancer units depending on the levels of care that these can provide. We also advise on the monitoring and follow‐up of children with cancer during and after treatment, and discuss potential areas for future research.

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Few data show the impact of the disease caused by the SARS-CoV-2 virus (called COVID-19) on the pediatric population. However, it is known that children, especially those of a younger age, are a group susceptible to infections, due to some particularities such as immaturity of the immune system, and therefore need special attention during the pandemic. Newborns, infants, children and adolescents hospitalized with suspected or confirmed COVID-19 should receive adequate nutritional assistance. Based on information from the small number of pediatric cases of COVID-19 (compared to the adult population), on the knowledge of the physiological characteristics of this age group and on the epidemiological understanding of SARS-CoV-2, suggestions for a practical approach to care for these patients in units hospitals were developed.