Table 3. . Categories of pediatric malignancies per the WHO's International Classification of Childhood Cancer system.

ICCC category	Malignancies
I	Leukemias, myeloproliferative diseases and myelodysplastic diseases
II	Lymphomas and reticuloendothelial neoplasms
III	CNS and miscellaneous intracranial and intraspinal neoplasms
IV	Neuroblastoma and other peripheral nervous cell tissues
V	Retinoblastoma
VI	Renal tumors
VII	Hepatic tumors
VIII	Malignant bone tumors
IX	Soft tissue and other extraosseous sarcomas
X	Germ cell tumors, trophoblastic tumors and neoplasms of gonads
XI	Other malignant epithelial neoplasms and malignant melanomas
XII	Other and unspecified malignant neoplasms

ICCC: International Classification of Childhood Cancer.