There is usually no defined or sure way to prevent Germ Cell Tumour in children. Most of the risk factors include genetic conditions which cannot be changed. Hence, knowing the risk factors, and if you have any, then doing regular screening and tests can help diagnose them earlier 1.
References
- 1.Beyer J, Albers P, Altena R, et al. Maintaining success, reducing treatment burden, focusing on survivorship: highlights from the third European consensus conference on diagnosis and treatment of germ-cell cancer. Annals of Oncology. Published online April 2013:878-888. doi:10.1093/annonc/mds579