I need to know what is wilms tumor survival rate?

Depends on Stage: Wilms tumor survival rate depends on stage and biological characteristics of the tumor. It is a pediatric tumor, though some adults can be diagnosed with it (rare). Overall, the prognosis is very good for most (>90% cure). However, if the tumor has "diffuse anaplasia" and has spread, survival rate is lower (~45%). http://www.cancer.gov/cancertopics/pdq/treatment/wilms/healthprofessional/page5.