Cases in young people and adults are very rare. It sometimes involves both kidneys and develops from undifferentiated nervous tissue.

Among the causes of this type of cancer is genetic (mutation occurs at the level of two genes on chromosomes 1- WT1 and WT2).

Symptoms common to Wilms' tumour include abdominal and lower abdominal pain, vomiting, nausea, urinary tract infections (they occur very frequently), increased blood pressure and others. Tests (X-ray of the chest, Medical US, CT, MRI, renal arteriography or fine needle biopsy of the tumour) are used to diagnose Wilms' tumour. Treatment consists of the introduction of chemotherapy followed by excision of the tumour.