[Clinical features and outcomes of neuroblastoma patients aged above 5 years].

Objective: To investigate the clinical features and outcomes of neuroblastoma (NB) children aged above 5 years, and to provide a theoretical basis for improving prognosis.

Methods: A retrospective analysis was performed for the clinical data of 54 previously untreated NB children, and their clinical features and outcome were analyzed. The Kaplan-Meier method was used for survival analysis.

Results: Among the 54 children, there were 36 boys and 18 girls, and all of them had stage 3 or 4 NB. Of all the children, 41 (41/54, 76%) had retroperitoneal space-occupying lesions, 10 (10/54, 18%) had mediastinal space-occupying lesions, 2 (2/54, 4%) had intraspinal space-occupying lesions, and 1 (1/54, 2%) had pelvic space-occupying lesions. At the end of the follow-up, 30 children (30/54, 56%) survived, among whom 23 (77%) achieved disease-free survival (9 achieved complete remission after chemotherapy for recurrence), 6 (20%) achieved partial remission of tumor (all of them received chemotherapy again due to recurrence), and 1 (3%) experienced progression (with progression after chemotherapy again due to recurrence); 24 children (44%) died, among whom 22 died after chemotherapy again due to recurrence and 2 died of multiple organ failure during the first treatment. According to the Kaplan-Meier survival analysis, the mean survival time was 53.8 months, and the children with stage 3 NB had a significantly higher overall survival rate than those with stage 4 NB (80% vs 53%; p<0.01). The children with recurrence had a significantly lower mean survival time than those without recurrence (51.68 months vs 62.57 months; p<0.01).

Conclusions: Older children often have late-stage NB, but standard treatment can improve their outcomes.