Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the stages of Wilms Tumor and Other Childhood Kidney Tumors ?
    ### Response:
    Key Points
                    - Wilms tumors are staged during surgery and with imaging tests.    - There are three ways that cancer spreads in the body.    - Cancer may spread from where it began to other parts of the body.    - In addition to the stages, Wilms tumors are described by their histology.
    