Maintaining good nutritional status during treatment for children with cancer is crucial for many outcomes, such as overall survival rate, tolerance to treatment, susceptibility to infection, and quality of life. Neurotumors in children account for the highest proportion among solid tumors in children. Previous studies have clearly shown that neurotumors in children have different nutritional characteristics from hematological tumors and other solid tumors in children. Our retrospective data found that there was a significant correlation between the BMI Z values of children with neurotumors before and during radiotherapy and the frequency of adverse events. The occurrence of adverse events has a negative impact on the quality of life of child patients. Therefore, we plan to conduct a prospective, observational, multi-center longitudinal cohort study to evaluate the dynamic changes in nutritional status during the peri-radiotherapy period, explore the correlation between nutritional status and quality of life in children with neurotumors before and after radiotherapy, and establish a nutritional management plan and nutritional risk early warning model suitable for Chinese children with neurotumors.

Inclusion Criteria:

• The patient and the legal guardian have agreed to sign the informed consent form;
• Age ≥ 5 years old and ≤ 18 years old;
• The pathological or clinical diagnosis is a neurological tumor;
• Patient has indications for radiotherapy;
• The expected survival time is over 6 months.

Exclusion Criteria:

• Accompanied by other serious complications;
• The researcher judged that it was not suitable to participate in this study.

children with neuro-oncological tumors