<prompt> Which among the following is the commonest malignancy of childhood?ALLBrain tumorLymphomaNeuroblastoma  <response>: The most common childhood malignancies are acute lymphoblastic leukemia, central nervous system CNS tumors and lymphomas. Together, these cancers account for 63 percent of cases. The frequency is ALL Brain tumor Lynphoma Neuroblastoma. Neuroblastoma, retinoblastoma and Wilms tumor most commonly occur in children between bih and four years of age, whereas osteosarcoma, Ewings sarcoma and Hodgkins disease tend to occur in children more than 10 years of age. Acute lymphoblastic leukemia is the most common type of leukemia in children. Acute lymphoblastic leukemia typically develops in children between one and 10 years of age. This leukemia is more common in males and in whites. 