Childhood nephroblastoma, or Wilms tumor, is a rare type of kidney cancer that occurs primarily in children between the ages of 3 and 4. Wilms tumor usually affects only one kidney, but rarely both kidneys at the same time. Advances in the diagnosis and treatment of Wilms tumor have improved over the years, so most children with Wilms tumor do well.

Nephroblastoma, also known as Wilms' tumor, is a rare type of cancer that mainly affects children aged 3 to 4 years. Although this is a dangerous disease in children, modern medicine has made great strides in the diagnosis and treatment of nephroblastoma in children. Therefore, the prognosis for children with this disease is getting better and better, the cure rate is high.