<prompt> Most common cancer in children less than 10 years:LeukemiaNeuroblastomaBrain tumorWilms tumor  <response>: a. LeukemiaRef: Nelsons 20e p 2437, Ghai 8e 599-607Most frequent childhood cancers are: in order of decreasing frequency Leukemia Most common is ALLQ Neuroblastoma Wilms tumor Hepatoblastoma Retinoblastoma 