Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Wilms Tumor and Other Childhood Kidney Tumors ?
    ### Response:
    Tests are used to screen for Wilms tumor.
                    Screening tests are done in children with an increased risk of Wilms tumor. These tests may help find cancer early and decrease the chance of dying from cancer.   In general, children with an increased risk of Wilms tumor should be screened for Wilms tumor every three months until they are at least 8 years old.
    