CHILDS NERVOUS SYSTEM, vol.31, no.6, pp.893-899, 2015 (SCI-Expanded)
Tumors of central nervous system (CNS) are accounted as the second most common tumors in childhood (21 % of all cancers) following hematologic malignancies. The patients can suffer more than one cancer in their lifetime, and radiotherapy is claimed for de novo formation of a new tumor in years after treatment of an initial tumor.