Canadian Cancer Society logo

Wilms tumour

You are here: 

Symptoms of Wilms tumour

Wilms tumour may not cause any signs or symptoms in its early stages. The kidneys are deep in the body and do not have very many nerves, so these tumours may grow without causing pain or discomfort. Symptoms appear once the tumour grows into surrounding tissues and organs.Other health conditions can cause the same symptoms as Wilms tumour.

Symptoms of Wilms tumours include:

  • a painless lump in or swelling of the abdomen
  • pain in the abdomen
  • blood in the urine, which is called hematuria
  • high blood pressure
  • fever
  • anemia
  • upset stomach
  • weight loss
  • loss of appetite
  • veins across the abdomen that appear larger than normal, or distended
  • feeling generally unwell or weak
  • fatigue
  • shortness of breath (if cancer has spread to the lungs)


Researchers Dr Steve Manske and Dr Leia Minaker Dr Steve Manske and Dr Leia Minaker are translating evidence from tobacco research into action.

Read more

Access to services in your community

Illustration of houses side-by-side

The Canadian Cancer Society’s Community Services Locator helps cancer patients and their families find the services and programs they need in their community.

Learn more